Startseite Spatial-temporal and trend analysis of traffic accidents in AP Vojvodina (North Serbia)
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Spatial-temporal and trend analysis of traffic accidents in AP Vojvodina (North Serbia)

  • Emina Kričković EMAIL logo , Tin Lukić , Tanja Srejić , Anastazija Stojšić-Milosavljević , Vladimir Stojanović und Zoran Kričković
Veröffentlicht/Copyright: 13. April 2024
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Abstract

The objective of this study is to analyse the spatial-temporal patterns of traffic accidents using data from 2011 to 2020 for the AP Vojvodina. The spatial-temporal patterns of traffic accident hotspots were identified at the municipality level using the Getis–Ord G i statistic in ArcGIS Pro software. Trends in traffic accidents were analysed using the Mann-Kendall (MK) statistic. A certain trend in the number of traffic accidents, fatalities, and injuries was detected in 15 out of 45 municipalities. In two municipalities, the trend in the number of traffic accidents is decreasing, while in seven, it is increasing. In three municipalities, a decreasing trend in the number of traffic fatalities was observed. A decreasing trend in traffic injuries was identified in five municipalities. Hotspot analysis on the number of traffic accidents and traffic injuries revealed hotspots in seven municipalities, while no hotspots were detected in the number of traffic fatalities. In the traffic casualties weighted number, persons in tractors, hotspots were identified in two municipalities. This research has the potential to enhance traffic safety by directing targeted safety measures towards identified hotspots. Such measures could ultimately lead to a reduction in traffic accidents, consequently curbing the number of both fatalities and injuries.

List of abbreviations

AP

Autonomous Province

MK

Mann-Kendall

RTSA

Road Traffic Safety Agency

STA

Spatial-temporal analysis

1 Introduction

The growing trend of traffic accidents is considered a serious public health problem in most countries of the world [1,2,3]. The number of traffic accidents, the number of fatalities, as well as the number of people injured in traffic accidents is one of the crucial indicators of the health status of the population [4]. As a result of traffic accidents, very serious physical injuries occur where people are mainly restricted in carrying out their usual life activities and work [4]. Traffic accidents are caused by factors related to the road, vehicles, and the human factor. The human factor alone or in combination with other factors plays a significant role in over 90% of accidents [4,5].

The Global Status Report on Road Safety 2013 reveals that 1.24 million people lost their lives in road accidents worldwide in 2010 [6,7]. This number is deemed unacceptably high, particularly when considering the additional 50 million injuries reported annually [7,8]. Approximately 1.3 million people succumbed to road accidents, causing most countries to incur losses equivalent to 3% of their gross domestic product [9,10]. On a global scale, the number of deaths from road traffic crashes has seen a slight decrease from 2000 (19,099 per 100,000 population) to 2019 (16,714 per 100,000 population), representing a reduction of over 12% [10,11].

According to the Road Safety Annual Report 2022, among the members of the International Traffic Safety Data and Analysis Group, Norway had the lowest fatality rate in recent decades, with 1.5 deaths per 100,000 population in 2021 [12]. Three countries had a death rate above 10 – Chile (10.4), the United States (12.9), and Colombia (14.2) [12]. According to the same report, Serbia ranks fifth in the number of deaths per 100,000 population [12], which is a very serious public health problem. On the bar chart (Figure 1), a comparison of the countries with the highest number of road deaths per 100,000 inhabitants is presented.

Figure 1 
               Road fatalities per 100,000 population, 2021. Source: [12], revised by authors.
Figure 1

Road fatalities per 100,000 population, 2021. Source: [12], revised by authors.

The trend of traffic fatalities in Malawi was investigated by Ngwira et al. using the MK statistic [13]. The same approach was used by Hossain et al. in the state of Louisiana to study the trend analysis of traffic accidents [14]. Peltzman gave one of the first examples of road safety analysis based on accident risk taking into account trends over time [15,16].

The spatio-temporal analysis makes a significant contribution when used in conjunction with spatial and statistical analysis for understanding change [17]. Spatial analysis of traffic accidents is of great importance in comprehending the conditions under which accidents occur, facilitating the planning of preventive activities at specific locations [18].

Cheng et al. proposed a comprehensive spatio-temporal analysis method integrating time-space cube analysis, spatial autocorrelation analysis, and emerging hotspot analysis to investigate the characteristics of traffic accident development and identify accident hotspots in Wujiang [19]. Hotspot analysis (Getis–Ord G i ) techniques within the GIS environment employed in determination of the spatio-temporal pattern of traffic accidents have been used in various traffic analyses as indicated by Hazaymeh et al. for Irbid Governorate, Jordan [20]. In the study “Spatio-Temporal Clustering of Road Accidents: GIS-Based Analysis and Assessment,” Prasannakumara et al. used spatial clustering of accidents and spatial density of hotspots conducted according to Getis-Ord G i statistics [21]. The same hotspot analysis was applied in Nigeria on the Lokoja-Abuja-Kaduna highway by Afolayan et al. [22]. Furthermore, Alam and Tabassum analysed and evaluated hotspot areas for traffic crashes based on the corresponding severity of traffic accidents in Ohio [23]. Erdoğan et al. investigated a GIS-based assessment of long-term traffic accidents in Turkey using spatio-temporal and empirical Bayesian analyses [17].

In the Republic of Serbia, the number of road accidents recorded in 2020, with 492 traffic fatalities, is the lowest since the statistical monitoring and analysis of road accidents began in the Republic of Serbia [24]. According to the publication [24], there were 1,810 fatalities in road accidents in Serbia in 1981, 1,892 in 1991, 1,275 in 2001, and 731 in 2011. When comparing these figures with the situation in 2020, it is evident that the number of fatalities in road accidents in Serbia has significantly decreased compared to 1981. This decline in the number of fatalities is partly attributed to the implementation of new traffic regulations in 2009. Since that year, the Republic of Serbia has enacted more than ten laws or amendments to traffic laws and has adopted a strategy for road safety on the roads of the Republic of Serbia for the period from 2015 to 2020 [25,26].

On the territory of Serbia and the province of the Autonomous Province of Vojvodina (AP Vojvodina), there are only a few geographical studies on traffic accidents. Most previous studies have primarily focused on analysing the gender and age structure of fatalities in road accidents, the causes of fatal road accidents, and the type of vehicles involved in the accidents [10,27]. Jović Vraneš and Kosanović analysed road accidents in Serbia from 1999 to 2014 [27]. The authors examined the number of road accidents and casualties (deaths and injuries of road users), demographic characteristics, and the standard causes that led to accidents [27]. Petrović et al. analysed the changes in the number of traffic fatalities in the Republic of Serbia [28], and Lović-Obradović et al. determined the spatio-temporal variability of traffic accident mortality for the city of Belgrade [10]. Đurić and Miladinov-Mikov studied the epidemiological characteristics of road traffic accidents in the AP Vojvodina for the period 1992–2001 and found that the studied area had the highest rate of traffic fatalities per 10,000 vehicles in Europe during the mentioned period [5]. In the study "Temporal analysis of the traffic accidents occurrence in Province of Vojvodina,” Bačkalić cross-referenced the number of road accidents with traffic fatalities and injuries (period 2001–2009) from different time aspects and identified critical days and hours, as well as months and days [16]. Bačkalić et al. analysed the frequency of traffic accidents on rural roads in the territory of the AP Vojvodina from 2005 to 2011 [7], and Pljakić et al. analysed traffic zones in the city of Novi Sad, including accidents that occurred during the 3-year period (2015–2017) using G i statistics [18]. Sentić and Đorđević, emphasize the significant importance of studying physical-geographical factors in the highway construction process to achieve a high level of traffic safety on the Belgrade-Novi Sad corridor [29]. In their subsequent study, Sentić et al., investigated the impact of wind on traffic safety in the Belgrade and Novi Sad regions [30].

In the AP Vojvodina region, the number of registered vehicles has been consistently increasing. Data from the Chamber of Commerce of Vojvodina indicate that in 1990, there were 324,460 registered vehicles [31,32]. According to the Statistical Office of the Republic of Serbia, there were 700,468 registered vehicles in 2019 [33]. These figures highlight that the number of registered vehicles has more than doubled over three decades [32].

This study does not delve into the factors influencing the occurrence of traffic accidents in the AP Vojvodina territory due to the complexity of the overall process, requiring the involvement of numerous experts and organizations. The main objective of this study is to conduct a comprehensive spatio-temporal analysis of traffic accidents in the AP Vojvodina region to identify areas most susceptible to their frequent occurrence (from a geographer's perspective). Additionally, the study presents categories of participants in traffic accidents along with their characteristics, and analyses trends in the number of traffic accidents, injuries, and fatalities, respectively.

2 Methods

2.1 Study area

The AP Vojvodina (northern part of Serbia) is a geospatial entity with specific natural-geographic and social-economic features [4,34]. It is located in the northern part of the Republic of Serbia (Figure 2). It is situated between 44° 38′ and 46° 10′ north longitude and 18° 10′ and 21° 15′ east latitude, in south-eastern Europe, on the Balkan Peninsula and includes the southern part of the Pannonian Plain [4,34,35]. To the north lies the border with Hungary, to the east Romania, to the west it borders Croatia, while to the southwest it borders Bosnia and Herzegovina; to the south, the border is formed by the Sava and Danube rivers [4,36,37]. The studied area covers 21,506 km2 and accounts for 24.3% of the total area of the Republic of Serbia [4,34,38]. There are 45 municipalities and cities in the study area, together with the capital city of the province, Novi Sad [4].

Figure 2 
                  The road and railway network of the studied area and their position in Europe and Serbia. Source: [43], revised by authors.
Figure 2

The road and railway network of the studied area and their position in Europe and Serbia. Source: [43], revised by authors.

In 2022, the Republic Institute of Statistics recorded 1,740,230 inhabitants in the AP Vojvodina [39]. The relief of the AP Vojvodina is primarily flat, except for its mountainous regions which include Fruška Gora and Vršačke Planine. In addition to these isolated mountain ranges, the otherwise uniform lowlands are punctuated by sandstone formations, loess plains, and alluvial plains [4,37,40]. The climate in the study area is moderately continental, characterized by a wide range of extreme temperatures [4]. The mean maximum temperature in July is 21.4°C, while the mean minimum temperature in January is −1.3°C [4,41]. The mean annual air temperature is 11°C, resembling that of spring [4,41]. The region experiences varying winds in terms of intensity, direction, and duration throughout the year [4]. The prevailing winds are gentle, coming from the north and south [4,41]. The AP Vojvodina boasts abundant surface and underground water resources [4,42]. The rivers within the region are part of the Danube and Black Sea basins [4,37].

The study area is homogeneous in the physical-geographical sense but displays increasing dispersion from a social-geographical perspective. It is intricately connected to other parts of Serbia, particularly the Danube region, which, along with the Belgrade region and the influence of the Velika Morava, constitutes a pivotal area and the Danube itself serves as an axis of development [4,44]. Presently, the AP Vojvodina, alongside the Belgrade region, stands out as the most developed part of Serbia [42]. Major transportation routes, including the E-75 highway, railways, and air traffic corridors, traverse the study area [4,45].

The E-75 highway runs from Central Europe through Horgoš, Novi Sad, and onward to Belgrade [4]. It continues southeast towards Niš, with one branch leading east to the Bulgarian border and the other south towards Skopje and Thessaloniki [4,46]. As presented in Figure 2, the studied area boasts an extensive road network, with 1,620 km of main roads, 1,797 km of regional roads, and 3,021 km of local roads, totalling 6,468 km. Of these, 5,376 km have modern pavement, 128 km are paved, and 964 km are dirt roads [4,46].

The railway system is well-distributed and branched, with a crucial line connecting Vojvodina to Budapest via Novi Sad and Subotica, linking Central and Western Europe. Another line, through Belgrade, connects Vojvodina to Sofia and Istanbul in the east, as well as Athens in the south [4,45,46].

2.2 Dataset

For this research, we utilized statistical reports on traffic safety published by the Road Traffic Safety Agency (RTSA) of the Republic of Serbia from 2011 to 2020 [47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134]. These data, available on the RTSA’s official website, are open source. The publications “Analysis of the state of road safety for the period from 2011 to 2015 by local governments” and the corresponding analysis for the period from 2016 to 2020 for each municipality in the territory of the AP Vojvodina were consulted [47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134]. These reports included various analyses, and the study focused on the number of traffic accidents, fatalities, injuries, and the weighted number derived from them.

Administrative boundaries at the municipality, county, province, and state levels were obtained from the Eurostat official website in *.shp format, referenced in the WGS84 system [135]. Additional data, such as background maps, were downloaded from the open source repositories using GIS software [135]. Subsequently, the compiled data underwent a review, standardization, and unification process. All data were stored in ArcGIS Pro 3.0 software within the GIS database created specifically for this research. A schematic representation of this process is illustrated in Figure 3.

Figure 3 
                  Schematic representation of the procedures carried out for this study.
Figure 3

Schematic representation of the procedures carried out for this study.

2.3 Trend analysis

Before the conducted analysis of traffic safety hotspots in the AP Vojvodina, a MK statistic was applied to analyse any trends in the number of traffic accidents, fatalities, and injuries separately. The MK test can be applied in cases when it can be assumed that for the value of x i time series, the following model holds true [35,136]:

(1) S = i = 2 n j = 1 i 1 Sign ( x i x j ) ,

where sign (x i x j ) is

(2) Sign ( x ) = 1 , for x i x j > 0 0 , for x i x j = 0 1 , for x i x j < 0 .

The statistic S tends to normality for large n; with mean and variance defined as follows [34,126]:

(3) E ( S ) = 0 ,

(4) V ( S ) = 1 / 18 n ( n 1 ) ( 2 n + 5 ) P = 1 q t P ( t P 1 ) ( 2 t P + 5 ) ,

where n is the length of the times-series, t P is the number of ties for the pth value and q is the number of tied values (i.e. equals values). The second term represents an adjustment for tied or censored data. The standardized test statistic Z is given by [35,136,137]

(5) Z = S 1 Var ( S ) if S > 0 , 0 if S = 0 , S + 1 Var ( S ) if S < 0 .

The presence of a statistically significant trend is evaluated using the Z value. This statistic is used to test the null hypothesis such that no trend exists [35,136]. A positive Z indicates an increasing trend in the time-series, while a negative Z indicates a decreasing trend [136]. To test either the increasing or decreasing monotonic trend at p significance level, the null hypothesis is rejected if the absolute value of Z is greater than Z (1-P/2); where Z (1-P/2) is obtained from standard normal cumulative distribution tables [35,136]. According to the MK test, two hypotheses were tested: the null hypothesis, H 0, that there is no trend in the time series; and the alternative hypothesis, H a, that there is a significant trend in the series, for a given significance level limit [136]. Probability, p, was calculated to determine the level of confidence in the hypothesis. If the computed value p is lower than the chosen significance level α (e.g. α = 5%), the H 0 (there is no trend) should be rejected, and the H a (there is a significant trend) should be accepted; and if p is greater than the significance level α, then the H 0 is accepted (or cannot be rejected) [35,136,138].

This test was performed in Python software using the pyMannKendall module. This module is a non-parametric MK trend analysis package implemented in pure Python, which brings together almost all types of MK tests. Currently, this package has 11 MK Tests and 2 Sen’s slope estimator functions [139]. In this research, the Original MK test was applied [136]. The Original MK test [137,138] is a non-parametric test, which does not consider serial correlation or seasonal effects [139]. The pyMannKendall module requests two or more parameters depending on the type of test. For the original MK test, two parameters were needed [139]. The first x is a vector which could be a python list, numPy array or pandas series, and the second alpha is a significance level, which in this case was a default value of 0.05 [139]. In this research, the first parameter was a Python dictionary with municipalities’ names as dictionary keys and a numPy array of numbers of traffic accidents, fatalities, and injuries separately for the dictionary values.

Spatial-temporal analysis ( STA ) Hot-spot analysis ( Getis Ord G i ) .

The utilization of geographic information systems (GIS) for spatial representation of diseases and the conditions in the health sector (government, provinces, and municipalities) of the given population can contribute to its intensive development and applicative importance according to Kričković et al. [34,140]. The second analysis implied spatial-temporal analysis (STA) using Hotspot Analysis (Getis-Ord G i ) tool in ESRI’s ArcGIS Pro software. A hotspot is a location or a small area within an identifiable boundary showing concentration of incidents [21,141]. This spatial statistics tool identifies statistically significant spatial clusters of high values (hotspots) and low values (cold spots). The tool calculates the Getis-Ord G i statistic for each feature in a dataset. This hotspot analysis utilizes the G i statistic that can be calculated as follows:

(6) G i = n j = 1 ω i , j x j X ¯   n j = 1 ω i , j S n n j = 1 ω i , j 2 n j = 1 ω i , j 2 n 1 ,

where G i is the spatial autocorrelation (spatial dependency) statistics of an event i over the n events, the term x j defines the magnitude of the variable x at the events j over all n, and the term w i,j defines the weight value between the events i and j that represents their spatial interrelationship [34,142,143,144,145,146] and

(7) X ¯ = n j = 1 x j n ,

(8) S = n j = 1 x j 2 n ( X ¯ ) 2 .

The G i statistics consider the magnitude of each feature in the dataset in the context of its neighbours’ values [34,142,143,144]. The G i statistic returned for each feature in the dataset is a z-score. The resultant z-scores and p-values show spatial clusters of the features with either high or low values. As in the MK test, two hypotheses were tested, H 0 and H a [34,141,142,143,144]. The z-scores and p-values returned by this tool show whether the null hypothesis could be rejected or not. For statistically significant positive z-scores, the larger the z-score is, the more intense the clustering of high values (hotspot) [141]. For statistically significant negative z-scores, the smaller the z-score is, the more intense the clustering of low values (cold spot) [141]. This tool works by looking at each feature within the context of neighbouring features [141]. A feature with a high value is interesting but may not be a statistically significant hotspot [141]. A feature as a statistically significant hotspot has a high value and is surrounded by other features also with high values [141]. The local sum for a feature and its neighbours is compared proportionally to the sum of all features; when the local sum is very different from the expected local sum, and when that difference is too large to be the result of random chance, a statistically significant z-score results [141].

The analysis of traffic safety hotspots in the AP Vojvodina was divided into two groups. In the first group, the hotspots of traffic accidents were analysed based on the number of traffic accidents, traffic fatalities, and traffic injuries separately, based on RTSA reports from 2011 to 2020 [47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134]. The second group included an analysis of the weighted number of traffic casualties, summarized and separated into drivers and passengers in a passenger car; cyclists, moped riders, and motorcyclists; pedestrians; persons in trucks and persons in tractors based on RTSA reports from 2016 to 2020 [91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134]. Because of the RTSA manner of storing data on weighted number, it was impossible to use data in the MK analysis and in hotspot analysis for the same period as in the first group. This weighted number of casualties considers all the weights of traffic consequences and multiplies them with a specific weighting factor – weight (fatality persons – weight 99, severely injured persons - weight 13, slightly injured persons– weight 1), and adds up the values thus obtained [147].

3 Results

3.1 Trend analysis of the number of traffic accidents, fatalities, and injuries

As previously mentioned, the first analysis focused on exploring the application of the MK trend test. This analysis provided insights into the trends in the number of road accidents, fatalities, and injuries. The results are illustrated through parameters derived from the MK test for each municipality from 2011 to 2020, as presented in Table 1. The most significant statistical findings in the table are marked in bold. Although the module offers additional parameters, this presentation includes key ones – p, Z, and s, which represent the Theil-Sen estimator/slope or Sen’s slope.

Table 1

Parameters of the MK test for the number of traffic accidents, fatalities, and injuries at the significance level of 0.05 by municipality from 2011 to 2020 in the study area

Municipality Number of traffic accidents Number of traffic fatalities Number of traffic injuries
p Z s p Z s p Z s
Ada 0.124 −1.539 −0.40 0.511 −0.658 0.00 0.127 −1.527 −1.88
Alibunar 0.591 −0.537 −1.50 0.170 −1.373 −0.25 0.857 −0.180 −0.33
Apatin 0.720 0.358 0.75 0.570 0.568 0.00 0.471 −0.721 −1.75
Bač 0.530 −0.629 −1.00 0.926 −0.093 0.00 0.474 −0.716 −1.33
Bačka Palanka 0.025 2.245 5.00 0.848 0.192 0.00 0.653 0.449 0.33
Bačka Topola 0.000 3.531 5.50 0.030 −2.164 −0.67 0.578 0.556 0.38
Bački Petrovac 0.049 −1.968 −4.50 0.494 0.684 0.00 0.323 −0.988 −2.50
Bečej 0.530 −0.629 −2.67 0.088 −1.703 −0.25 0.088 −1.706 −6.20
Bela Crkva 0.243 −1.167 −1.22 0.852 0.187 0.00 0.088 −1.706 −2.50
Beočin 0.653 0.449 0.67 0.850 −0.189 0.00 0.530 −0.629 −1.17
Čoka 0.178 1.347 1.00 0.565 0.575 0.00 0.653 −0.449 −0.60
Inđija 0.928 0.090 0.25 0.780 0.279 0.00 0.474 −0.716 −1.75
Irig 0.720 0.358 1.20 0.079 −1.759 −0.25 0.927 −0.092 0.00
Kanjiža 0.005 2.784 4.00 0.052 −1.940 −0.20 0.588 −0.541 −0.50
Kikinda 0.020 2.326 10.00 0.174 1.358 0.33 0.928 0.090 0.13
Kovačica 0.059 −1.886 −2.33 0.203 −1.273 −0.33 0.059 −1.886 −3.63
Kovin 0.858 −0.179 −1.00 0.854 0.184 0.00 0.243 −1.167 −1.88
Kula 1.000 0.000 0.29 1.000 0.000 0.00 0.057 −1.906 −2.78
Mali Iđoš 0.025 2.245 2.00 0.185 1.325 0.25 0.419 0.808 1.33
Nova Crnja 0.149 −1.443 −0.80 0.222 −1.221 −0.14 0.466 −0.729 −0.50
Novi Bečej 0.530 −0.629 −1.17 0.045 −2.000 −0.40 0.858 −0.179 −0.40
Novi Kneževac 0.025 2.245 1.71 0.836 −0.207 0.00 0.651 0.453 0.67
Novi Sad 1.000 0.000 18.50 0.858 −0.179 −0.50 1.000 0.000 −8.20
Odžaci 0.591 −0.537 −3.80 0.927 0.092 0.00 0.283 −1.073 −1.86
Opovo 0.471 −0.721 −0.50 0.455 0.746 0.00 0.045 −2.006 −1.00
Pančevo 0.720 −0.358 −6.20 0.149 −1.443 −0.71 1.000 0.000 0.00
Pećinci 0.530 0.629 2.00 0.718 −0.361 −0.20 0.279 1.082 2.20
Plandište 0.239 −1.177 −1.33 0.702 −0.383 0.00 0.419 −0.808 −1.25
Ruma 0.928 −0.090 −2.33 1.000 0.000 0.00 0.074 1.789 5.50
Sečanj 0.415 −0.815 −0.33 0.443 −0.766 0.00 0.015 −2.425 −2.00
Senta 0.210 1.252 1.88 0.629 −0.483 0.00 0.088 −1.706 −1.75
Sombor 0.720 0.358 3.67 0.314 −1.007 −0.33 1.000 0.000 0.33
Srbobran 1.000 0.000 0.00 0.307 1.022 0.00 1.000 0.000 0.00
Sremska Mitrovica 0.530 0.629 11.25 0.927 −0.092 0.00 0.591 0.537 3.29
Sremski Karlovci 0.788 0.269 0.50 0.522 −0.641 −0.20 0.419 −0.808 −2.00
Stara Pazova 1.000 0.000 −4.00 0.928 −0.091 0.00 0.243 −1.167 −3.00
Subotica 0.591 0.537 12.67 0.410 −0.824 −0.50 0.591 −0.537 −2.40
Šid 0.243 1.167 3.00 0.925 0.094 0.00 0.786 0.272 1.00
Temerin 0.653 −0.449 −4.25 1.000 0.000 0.00 0.123 −1.543 −0.86
Titel 0.788 0.269 1.89 0.033 −2.133 −0.20 0.718 −0.361 −0.44
Vrbas 0.049 1.968 9.00 0.584 −0.547 −0.17 0.127 1.527 4.00
Vršac 0.858 −0.179 −3.33 0.234 −1.190 −0.25 0.039 −2.065 −4.20
Zrenjanin 0.591 0.537 2.50 0.146 −1.455 −0.57 0.049 −1.968 −15.00
Žabalj 0.032 −2.147 −3.50 0.517 −0.648 −0.13 0.007 −2.683 −6.14
Žitište 1.000 0.000 0.00 0.081 −1.746 −0.25 0.059 −1.886 −2.00

Note: pp-value of the significance test, Z – standardized test statistics, s – so-called Sen’s slope.

Marked values in bold are the most significant statistical findings.

In this analysis, specific trends were identified in 15 out of 45 municipalities. Notably, in the municipality of Bačka Topola, the number of road accidents is increasing, while the number of fatalities is decreasing. However, no significant trend was observed in the number of injuries. Conversely, in the municipality of Žabalj, both the number of road accidents and injuries are decreasing, with no discernible trend in the number of fatalities.

In the MK analysis of traffic accident numbers, trends were identified in 9 out of 45 municipalities, with 7 exhibiting an upward trend and only 2 showing a downward trend. Diagrams only depict statistically confirmed trends.

Figure 4(b) and (d) reveal the decreasing trends in traffic accidents for Bački Petrovac and Žabalj municipalities, with p, Z values of 0.050, −1.968 and 0.032, −2.147, respectively. Increasing trends are demonstrated in Figure 4(a) for Bačka Palanka (p = 0.025, Z = 2.245), Figure 4(h) for Bačka Topola (p = 0.0004, Z = 3.531), Figure 4(e) for Kanjiža (p = 0.005, Z = 2.784), Figure 4(f) for Kikinda (p = 0.020, Z = 2.326), Figure 4(i) for Mali Iđoš (p = 0.025, Z = 2.245), Figure 4(g) for Novi Kneževac (p = 0.025, Z = 2.245), and Figure 4(c) for Vrbas (p = 0.049, Z = 1.968).

Figure 4 
                  Trends in the number of traffic accidents according to the MK test from 2011 to 2020 for the municipalities of: (a) Bačka Palanka, (b) Bački Petrovac, (c) Vrbas, (d) Žabalj, (e) Kanjiža, (f) Kikinda, (g) Novi Kneževac, (h) Bačka Topola, and (i) Mali Idoš.
Figure 4

Trends in the number of traffic accidents according to the MK test from 2011 to 2020 for the municipalities of: (a) Bačka Palanka, (b) Bački Petrovac, (c) Vrbas, (d) Žabalj, (e) Kanjiža, (f) Kikinda, (g) Novi Kneževac, (h) Bačka Topola, and (i) Mali Idoš.

Apart from the MK analysis of the number of traffic accidents, the MK analysis of traffic fatalities only identified a declining trend in three municipalities. These trends are illustrated in Figure 5(a) for Bačka Topola, Figure 5(b) for Novi Bečej, and Figure 5(c) for Titel. The p-values for these trends are 0.030, 0.045, and 0.033, respectively, with corresponding Z values of −2.164, −2.000, and −2.133. Notably, no fatal accidents were recorded in any of these municipalities in 2020.

Figure 5 
                  Trends in the number of traffic fatalities using MK test from 2011 to 2020 for the municipalities of: (a) Bačka Topola, (b) Novi Bečej, and (c) Titel.
Figure 5

Trends in the number of traffic fatalities using MK test from 2011 to 2020 for the municipalities of: (a) Bačka Topola, (b) Novi Bečej, and (c) Titel.

The MK analysis of the number of traffic accidents unveiled a declining trend in 5 out of 45 municipalities. These trends are depicted in Figure 6(a) for Opovo (p = 0.045, Z = −2.006), Figure 6(b) for Sečanj (p = 0.015, Z = −2.425), Figure 6(c) for Vršac (p = 0.034, Z = −2.065), Figure 6(d) for Zrenjanin (p = 0.045, Z = −1.968), and Figure 6(e) for Žabalj (p = 0.045, Z = −2.006).

Figure 6 
                  Trends in the number of traffic injuries using MK test from 2011 to 2020 for the municipalities of: (a) Opovo, (b) Sečanj, (c) Vršac, (d) Zrenjanin, and (e) Žabalj.
Figure 6

Trends in the number of traffic injuries using MK test from 2011 to 2020 for the municipalities of: (a) Opovo, (b) Sečanj, (c) Vršac, (d) Zrenjanin, and (e) Žabalj.

3.2 STA

In the STA, also known as hot-spot analysis (Getis Ord G i ), hotspots were identified for different categories. The first category included the number of traffic accidents, the second category involved the number of traffic accidents resulting in fatalities, and the third category encompassed the number of traffic accidents resulting in injuries. The results of these analyses were presented using STA parameters and maps. In addition to the calculated p- and Z-values, the analysis also provides the sum of the number of traffic accidents, fatalities, and injuries. These parameters – sum, Z-values, and p-values – are detailed in Table 2.

Table 2

STA parameters for the number of traffic accidents, fatalities, and injuries by municipality from 2011 to 2020 in the study area

Municipality name Number of traffic accidents Number of traffic accidents fatalities Number of traffic accidents injuries
Σ GiZScore GiPValue Σ GiZScore GiPValue Σ GiZScore GiPValue
Ada 364 −0.663 0.507 18 −1.103 0.270 318 −0.760 0.447
Alibunar 375 −0.637 0.524 22 −0.855 0.393 408 −0.681 0.496
Apatin 701 0.028 0.978 19 −0.374 0.709 605 0.053 0.958
Bač 338 −0.304 0.761 16 −1.065 0.287 607 −0.522 0.602
Bačka Palanka 1,475 −0.469 0.639 9 −1.082 0.279 321 −0.480 0.631
Bačka Topola 701 −0.036 0.971 31 0.077 0.939 666 0.040 0.968
Bački Petrovac 622 2.500 0.012 40 1.172 0.241 1,505 2.376 0.018
Bečej 1,115 −0.655 0.512 35 −1.115 0.265 1,114 −0.777 0.437
Bela Crkva 362 −0.333 0.739 17 −0.393 0.695 315 −0.415 0.678
Beočin 525 2.584 0.010 14 1.337 0.181 395 2.389 0.017
Čoka 229 −0.638 0.524 11 −1.306 0.192 223 −0.780 0.435
Inđija 1,491 −0.397 0.691 56 −0.482 0.629 1,425 −0.385 0.700
Irig 490 2.455 0.014 14 1.613 0.107 370 2.401 0.016
Kanjiža 572 −0.550 0.582 163 0.979 0.328 450 −0.695 0.487
Kikinda 1,535 −0.457 0.648 40 −0.870 0.384 1,275 −0.532 0.595
Kovačica 4,29 −0.637 0.524 33 −0.900 0.368 538 −0.687 0.492
Kovin 694 0.215 0.830 49 1.208 0.227 779 0.520 0.603
Kula 1,080 −0.369 0.712 35 −0.351 0.725 1,085 −0.352 0.725
Mali Iđoš 384 −0.442 0.658 21 −0.582 0.561 353 −0.456 0.649
Nova Crnja 165 −0.447 0.655 12 −0.719 0.472 179 −0.511 0.610
Novi Bečej 492 −0.449 0.653 27 −0.614 0.539 440 −0.479 0.632
Novi Kneževac 242 −0.626 0.532 5 0.874 0.382 186 −0.755 0.450
Novi Sad 21,205 1.962 0.050 202 0.641 0.521 14,495 1.995 0.046
Odžaci 921 −0.456 0.648 25 −0.871 0.384 787 −0.419 0.675
Opovo 177 −0.525 0.599 6 −0.756 0.449 162 −0.567 0.570
Pančevo 3,125 0.215 0.830 98 1.208 0.227 3,217 0.520 0.603
Pećinci 677 −0.004 0.996 52 0.935 0.350 593 0.068 0.946
Plandište 179 −0.679 0.497 9 −1.200 0.230 184 −0.765 0.444
Ruma 2.191 −0.185 0.853 80 0.378 0.706 2,032 −0.173 0.863
Sečanj 206 −0.576 0.564 10 −1.120 0.263 232 −0.661 0.509
Senta 626 −0.664 0.507 18 0.643 0.520 442 −0.814 0.416
Sombor 2,856 0.154 0.877 52 −0.174 0.862 2,431 0.204 0.839
Srbobran 523 −0.371 0.711 7 −0.661 0.508 233 −0.418 0.676
Sremska Mitrovica 2,853 −0.016 0.987 84 0.182 0.855 2,115 −0.152 0.879
Sremski Karlovci 340 2.532 0.011 22 1.307 0.191 543 2.398 0.017
Stara Pazova 1,805 0.094 0.925 52 0.499 0.618 1,634 0.211 0.833
Subotica 3,392 0.278 0.781 80 0.553 0.580 2,900 0.378 0.705
Šid 867 0.192 0.848 35 0.699 0.485 562 0.085 0.932
Temerin 1,051 2.413 0.016 23 1.315 0.188 889 2.459 0.014
Titel 461 −0.128 0.898 17 0.293 0.770 295 0.144 0.885
Vrbas 1,691 −0.462 0.644 60 −0.615 0.539 1,529 −0.333 0.739
Vršac 1,078 −0.333 0.739 42 −0.393 0.695 847 −0.415 0.678
Zrenjanin 3,225 0.184 0.854 102 0.699 0.485 3,552 0.471 0.638
Žabalj 851 2.968 0.003 29 1.447 0.148 900 2.806 0.005
Žitište 279 −0.563 0.574 21 −0.865 0.387 302 −0.640 0.522

Note: Σ – sum of the number, GiZScore – Z-value of the G i statistic, GiPValue – p-value of the G i statistic.

The STA on the number of traffic accidents has identified hotspots in seven municipalities. These hotspots are shown in Figure 7(a). The following municipalities were identified as hotspots: Bački Petrovac (Z = 2.5, p = 0.012), Beočin (Z = 2.584, p = 0.010), Irig (Z = 2.455, p = 0.014), Novi Sad (Z = 1.962, p = 0.050), Sremski Karlovci (Z = 2.532, p = 0.011), Temerin (Z = 2.413, p = 0.016), and Žabalj (Z = 2.968, p = 0.003). It is interesting to note that six of these seven municipalities are located in the district of South Bačka, while only the municipality of Irig is located in the district of Srem. The municipalities of Beočin and Žabalj were identified as hotspots with a probability of 99%, while all other municipalities were identified with a probability of 95%. No hotspots were detected in the STA for the number of traffic fatalities, as can be seen from Figure 7(b). In the STA for the number of traffic injuries, hotspots were identified in the same municipalities as for the number of traffic accidents, as can be seen from Figure 7(c). The only difference is that the municipality of Žabalj (Z = 2.806, p = 0.005) was identified as a hotspot with a probability of 99%, while all others were identified as hotspots with a probability of 95%. These municipalities are: Bački Petrovac (Z = 2.376, p = 0.018), Beočin (Z = 2.389, p = 0.017), Irig (Z = 2.401, p = 0.016), Novi Sad (Z = 1.995, p = 0.046), Sremski Karlovci (Z = 2.398, p = 0.017), and Temerin (Z = 2.459, p = 0.014).

Figure 7 
                  The STA on the: (a) Number of traffic accidents, (b) number of traffic fatalities, and (c) number of traffic injuries.
Figure 7

The STA on the: (a) Number of traffic accidents, (b) number of traffic fatalities, and (c) number of traffic injuries.

The STA on the weighted number of traffic casualties identified hotspots in nine municipalities. As previously mentioned, this analysis was divided into six categories, as shown in Table 3. The results for each category were presented by municipality using the STA parameters. Similar to the previous analyses, these parameters include the Z and p values of the G i statistic.

Table 3

STA parameters for the traffic casualties weighted number, fatalities, and injuries by municipality in the study area from 2011 to 2020

Municipality name Traffic casualties weighted number Traffic casualties weighted number – drivers and passengers in a passenger car Traffic casualties weighted number – cyclists, moped riders, and motorcyclist Traffic casualties weighted number – pedestrians Traffic casualties weighted number – persons in trucks Traffic casualties weighted number – persons in tractors
Z p Z p Z p Z p Z p Z p
Ada −0.938 0.348 −1.158 0.247 −0.802 0.423 −0.759 0.448 −0.716 0.474 −0.936 0.349
Alibunar −0.876 0.381 −0.906 0.365 −1.056 0.291 −0.653 0.514 −0.692 0.489 −0.773 0.440
Apatin 0.121 0.904 −0.175 0.861 0.664 0.506 −0.014 0.989 0.065 0.948 0.813 0.416
Bač −0.735 0.462 −0.705 0.481 −0.700 0.484 −0.768 0.443 −0.690 0.490 −0.327 0.744
Bačka Palanka −0.737 0.461 −0.609 0.543 −0.747 0.455 −0.668 0.504 −0.951 0.341 −0.396 0.692
Bačka Topola 0.153 0.878 0.281 0.779 0.468 0.639 −0.206 0.836 0.037 0.971 −1.020 0.308
Bački Petrovac 2.109 0.035 1.979 0.048 2.025 0.043 2.415 0.016 1.954 0.051 −0.825 0.410
Bečej −0.996 0.319 −0.906 0.365 −1.231 0.218 −0.830 0.407 −0.849 0.396 −1.190 0.234
Bela Crkva −0.422 0.673 −0.373 0.709 −0.525 0.599 −0.213 0.831 −0.633 0.527 0.237 0.812
Beočin 2.164 0.030 2.074 0.038 2.050 0.040 2.343 0.019 2.096 0.036 −0.546 0.585
Čoka −0.840 0.401 −1.141 0.254 −0.401 0.688 −0.824 0.410 −0.731 0.465 −0.242 0.808
Inđija −0.347 0.729 −0.127 0.899 −0.619 0.536 −0.441 0.659 −0.138 0.890 −1.214 0.225
Irig 2.272 0.023 2.270 0.023 1.735 0.083 2.451 0.014 2.566 0.010 −0.395 0.692
Kanjiža −0.784 0.433 −1.035 0.301 −0.402 0.687 −0.639 0.523 −0.836 0.403 −0.592 0.554
Kikinda −0.418 0.676 −0.678 0.498 −0.117 0.907 −0.657 0.511 −0.016 0.987 0.638 0.524
Kovačica −0.865 0.387 −0.829 0.407 −1.097 0.273 −0.689 0.491 −0.685 0.493 −0.773 0.440
Kovin 0.754 0.451 1.210 0.226 0.458 0.647 0.316 0.752 0.619 0.536 1.055 0.292
Kula −0.260 0.795 −0.172 0.864 −0.217 0.828 −0.420 0.674 −0.166 0.868 −0.855 0.393
Mali Iđoš −0.478 0.633 −0.355 0.722 −0.564 0.573 −0.472 0.637 −0.445 0.656 −1.152 0.249
Nova Crnja −0.412 0.680 −0.682 0.495 −0.157 0.875 −0.602 0.547 −0.269 0.788 3.236 0.001
Novi Bečej −0.643 0.520 −0.669 0.503 −0.730 0.466 −0.540 0.589 −0.510 0.610 −0.327 0.744
Novi Kneževac −0.815 0.415 −1.090 0.276 −0.538 0.590 −0.737 0.461 −0.571 0.568 −0.761 0.447
Novi Sad 1.517 0.129 1.377 0.169 1.324 0.185 1.826 0.068 1.544 0.123 −0.432 0.666
Odžaci −0.546 0.585 −0.590 0.555 −0.418 0.676 −0.638 0.523 −0.400 0.689 −0.539 0.590
Opovo −0.697 0.486 −0.715 0.475 −0.850 0.395 −0.641 0.521 −0.412 0.680 −0.449 0.654
Pančevo 0.754 0.451 1.210 0.226 0.458 0.647 0.316 0.752 0.619 0.536 1.055 0.292
Pećinci 0.497 0.619 0.791 0.429 0.091 0.928 0.430 0.667 0.406 0.685 0.748 0.454
Plandište −1.067 0.286 −1.112 0.266 −1.154 0.249 −0.666 0.505 −1.130 0.258 −1.303 0.192
Ruma 0.090 0.928 0.314 0.753 −0.330 0.741 0.090 0.928 0.179 0.858 0.137 0.891
Sečanj −0.942 0.346 −1.058 0.290 −0.919 0.358 −0.614 0.539 −0.951 0.341 −1.091 0.275
Senta −0.895 0.371 −1.121 0.262 −0.605 0.545 −0.743 0.458 −0.768 0.443 −1.606 0.108
Sombor 0.258 0.797 −0.079 0.937 0.830 0.406 0.252 0.801 0.028 0.977 1.150 0.250
Srbobran −0.414 0.679 −0.265 0.791 −0.574 0.566 −0.350 0.727 −0.419 0.675 −1.156 0.248
Sremska Mitrovica 0.028 0.978 0.016 0.987 −0.008 0.994 0.217 0.828 −0.167 0.867 0.198 0.843
Sremski Karlovci 2.098 0.036 1.993 0.046 1.733 0.083 2.257 0.024 2.469 0.014 −0.975 0.330
Stara Pazova 0.553 0.580 1.063 0.288 0.013 0.989 0.356 0.722 0.564 0.573 −1.069 0.285
Subotica 0.516 0.606 0.494 0.621 1.075 0.282 0.130 0.896 0.295 0.768 −0.259 0.796
Šid 0.449 0.654 0.421 0.674 0.474 0.635 0.496 0.620 0.261 0.794 0.967 0.333
Temerin 2.197 0.028 2.069 0.039 2.038 0.042 2.489 0.013 2.059 0.039 0.020 0.984
Titel 0.253 0.800 0.483 0.629 0.071 0.943 −0.091 0.927 0.458 0.647 −0.008 0.994
Vrbas −0.257 0.797 −0.095 0.924 −0.306 0.760 −0.308 0.758 −0.311 0.756 −1.059 0.290
Vršac −0.422 0.673 −0.373 0.709 −0.525 0.599 −0.213 0.831 −0.633 0.527 0.237 0.812
Zrenjanin 0.616 0.538 0.629 0.529 0.763 0.446 0.297 0.766 0.786 0.432 −0.390 0.696
Žabalj 2.302 0.021 2.010 0.044 2.192 0.028 2.752 0.006 2.248 0.025 −0.364 0.716
Žitište −0.790 0.429 −1.092 0.275 −0.749 0.454 −0.607 0.544 −0.689 0.491 2.740 0.006

Note: Σ – sum of the number, GiZScore – Z-value of the G i statistic, GiPValue – p-value of the G i statistic.

No cold spots were detected in these analyses. The weighted number of traffic casualties was the first category in the STA. It identified hotspots in six municipalities, all with a 95% probability. These municipalities, along with their Z and p values, are as follows: Bački Petrovac (Z = 2.109, p = 0.035), Beočin (Z = 2.164, p = 0.030), Irig (Z = 2.272, p = 0.023), Sremski Karlovci (Z = 2.098, p = 0.036), Temerin (Z = 2.197, p = 0.028), and Žabalj (Z = 2.302, p = 0.021). Figure 8(a) illustrates these hotspots.

Figure 8 
                  The STA on the: (a) Traffic casualties weighted number, (b) traffic casualties weighted number – drivers and passengers in a passenger car, (c) traffic casualties weighted number – cyclists, moped riders, and motorcyclist, (d) traffic casualties weighted number – pedestrians, (e) traffic casualties weighted number – persons in trucks, and (f) traffic casualties weighted number – persons in tractors.
Figure 8

The STA on the: (a) Traffic casualties weighted number, (b) traffic casualties weighted number – drivers and passengers in a passenger car, (c) traffic casualties weighted number – cyclists, moped riders, and motorcyclist, (d) traffic casualties weighted number – pedestrians, (e) traffic casualties weighted number – persons in trucks, and (f) traffic casualties weighted number – persons in tractors.

The weighted number of traffic casualties was divided into five categories. The first category encompassed drivers and passengers in a car. In this STA, hotspots were identified in the same municipalities as in the previous analysis (Figure 8(b)). The Z and p values for these hotspots are 1.979 and 0.048 for Bački Petrovac, 2.074 and 0.038 for Beočin, 2.270 and 0.023 for Irig, 1.993 and 0.046 for Sremski Karlovci, 2.069 and 0.039 for Temerin, and 2.010 and 0.044 for Žabalj.

The second category included cyclists, moped riders, and motorcyclists (Figure 8(c)). The situation regarding these hotspots is the same as in the two previous analyses, with the only difference being that the municipalities of Irig and Sremski Karlovci were identified as hotspots with a probability of 90%, while others were identified with a probability of 95%. The Z and p values for these hotspots are 2.025 and 0.043 for Bački Petrovac, 2.050 and 0.040 for Beočin, 1.735 and 0.083 for Irig, 1.733 and 0.083 for Sremski Karlovci, 2.038 and 0.042 for Temerin, and 2.192 and 0.028 for Žabalj.

The third category in the hotspot analysis included pedestrians (Figure 8(d)). In this analysis, seven municipalities were identified as hotspots (Figure 8(d)). These municipalities, along with their respective Z and p values, are: Bački Petrovac (2.415, 0.016), Beočin (2.343, 0.019), Irig (2.451, 0.014), Novi Sad (1.826, 0.068), Sremski Karlovci (2.257, 0.024), Temerin (2.489, 0.013), and Žabalj (2.752, 0.006). While Žabalj was identified as a hotspot with a 99% probability, Novi Sad was identified with a 90% probability, and all other municipalities were identified with a 95% probability.

The next category analysed included people in trucks which is presented in Figure 8(e). The STA for this category identified six municipalities as hotspots. Five municipalities were identified with a 95% probability, namely, Beočin (2.096, 0.036), Irig (2.566, 0.010), Sremski Karlovci (2.469, 0.014), Temerin (2.059, 0.039), and Žabalj (2.248, 0.025), while Bački Petrovac (1.954, 0.051) was identified as a hotspot with a probability of 90%.

The last category analysed differed the most from the other STA analyses. It included people in tractors (Figure 8(f)). Only two municipalities were identified as hotspots, both with a 99% probability: Nova Crnja (Z = 3.236, p = 0.001) and Žitiste (Z = 2.740, p = 0.006).

4 Discussion

Monitoring and analysing the temporal distribution of traffic accidents and their consequences over several years allow us to observe trends in the development of these phenomena. This process provides comprehensive knowledge, enabling us to plan and implement appropriate measures [148]. By monitoring and analysing these trends, we gain insights into changes over time and specific phenomena related to road safety [28]. Space–time pattern analysis has been employed to understand where accidents cluster in traffic, confirm whether the overall number of traffic accidents is increasing or decreasing, and determine if the trend is statistically significant [17].

In this research, the STA of traffic accidents in the territory of the AP Vojvodina has been conducted to analyse trends in their occurrence and identify hotspots. Trends in the number of traffic accidents, fatalities, and injuries were found in 15 out of 45 local administrative units. Notably, only two municipalities, Bački Petrovac and Žabalj, show a decreasing trend in the number of traffic accidents, while seven municipalities – Bačka Palanka, Bačka Topola, Kanjiža, Kikinda, Mali Iđoš, Novi Kneževac, and Vrbas – exhibit an increasing trend.

Studies are recommended in these areas to investigate the causes of traffic accidents, assess road infrastructure, and enhance road safety. Additionally, understanding the “habits” and behaviour of road users in vulnerable areas is crucial. A trend of reducing traffic accident fatalities was observed in three municipalities: Bačka Topola, Novi Bečej, and Titel. Furthermore, the municipalities of Opovo, Sečanj, Vršac, Zrenjanin, and Žabalj exhibited a decline in traffic accident injuries. These municipalities set positive examples by effectively reducing both fatalities and injuries.

The STA on the number of traffic accidents, fatalities, and injuries identified hotspots in seven municipalities: Bački Petrovac, Beočin, Irig, Novi Sad, Sremski Karlovci, Temerin, and Žabalj. No hotspots were detected for traffic fatalities, except for the weighted number of traffic fatalities in Nova Crnja and Žabalj, attributed to their predominantly rural nature and agricultural activities. Figure 9 illustrates the intensity of hotspot occurrences. It shows that six municipalities – Bački Petrovac, Beočin, Irig, Sremski Karlovci, Temerin, and Žabalj – were identified as hotspots seven times in various spatial analyses. The city of Novi Sad was identified as a hotspot in three analyses, while the municipalities of Nova Crnja and Žitište were identified as hotspots only once in the analyses.

Figure 9 
               Intensity of Hotspots (number represents frequency of municipality identification as hotspot in analyses).
Figure 9

Intensity of Hotspots (number represents frequency of municipality identification as hotspot in analyses).

Similar to this, Figure 10 illustrates the weighted number of traffic casualties' ratios by categories. It is evident that the highest weighted number is within the first category, which includes drivers and passengers in a passenger car (42.54%), while the lowest is within the last analysed category, persons in tractors (2.39%). The weighted numbers in between are as follows: cyclists, moped riders, and motorcyclists (23.66%); persons in trucks (16.53%); and pedestrians (14.89%).

Figure 10 
               Weighted number of traffic casualties' ratios by categories.
Figure 10

Weighted number of traffic casualties' ratios by categories.

Bačkalić and Pljakić et al. offer valuable insights into spatial analysis and critical time periods for traffic accidents, respectively [16,18]. Future research should identify hotspots in other municipalities and conduct a similar analysis for the period after 2009. Implementing “stricter” measures during critical periods could contribute to reducing accidents, injuries, and fatalities.

In the study “Understanding the Physical Environment through Safe Highway Transport Mobility with a Special Review on Climate – The Highway Route Belgrade–Novi Sad, Serbia,” particular attention was given to climate elements that may pose a significant risk to road safety [29]. The research found that these climate elements exert a strong influence, but their impact can be effectively controlled through vegetation safety measures [29]. Furthermore, the study “Understanding the Influence of Climate Elements on Traffic: The Wind Impact Approach” emphasizes the effects of wind on traffic safety in Belgrade and Novi Sad [30].

The landscape design of both directions of the highway offers a potential means to mitigate the impact of climate elements on safety [29]. It is crucial to pay more attention to planning landscape design along highways and other roads to reduce the influence of climatic factors on the occurrence of traffic accidents. Additionally, conducting more detailed studies to comprehend traffic accidents related to physical-geographical factors is necessary. Identifying anthropogenic activities that can influence these occurrences is also imperative.

Environmental accidents and the unsustainable use of land resources can contribute to an increase in the number of traffic accidents. In 2018, an 800 ha fire in the fields of Stajićevo, Perlez, and Belo Blato near Zrenjanin affected a 200 ha of the Special Nature Reserve Carska Bara. The cause was the irresponsible burning of stubble on surrounding plots, leading to the rapid spread of the fire. Igniting crop residues, exacerbated by favourable meteorological conditions conducive to fire spread (low precipitation in the autumn period and pronounced windiness), the fire extended from adjacent agricultural areas to protected zones. The most affected areas were those covered with grass vegetation and reeds. The resulting smoke on the highway also led to a chain collision. Critical periods for fire outbreaks are March–April, July–August, and October–November.

There is a need to intensify penal policy measures in areas where stubble burning is prevalent. This activity poses a significant risk to the environment, and consequently, the health and lives of the population of the AP Vojvodina. In Figure 11a and b, cases of burning plant residues after harvesting are depicted, leading to fires and smoke that threaten traffic safety.

Figure 11 
               Cases of burning plant residues after harvesting: (a) near the road in Novi Sad and (b) in the Special Nature Reserve Carska Bara. Source: Petra Živić (17.10.2018).
Figure 11

Cases of burning plant residues after harvesting: (a) near the road in Novi Sad and (b) in the Special Nature Reserve Carska Bara. Source: Petra Živić (17.10.2018).

Driving under the influence of alcohol significantly impacts the rising number of road accidents. Data from the Serbian RTSA in 2020 highlighted areas with very high percentages of alcoholised persons, including the municipalities of Pančevo, Zrenjanin, Novi Sad, Kikinda, and Sombor [4]. Municipalities of the Subotica and Sremska Mitrovica recorded very low indicators [4]. Identifying these areas help prioritize interventions to improve road safety.

Daily migration is a dynamic and spatial phenomenon that reshapes the spatial dynamics of a territory [149]. According to Tomašević and Sokolovska [149], in the AP Vojvodina, the proportion of daily migrants traveling outside their municipality exceeds the national average of 44.08% [149,150]. Also, Tomašević and Sokolovska identify three functional regions centred around three cities in the region: Novi Sad, Zrenjanin, and Subotica [149].

The Statistical Office of the Republic of Serbia (Daily Migrants) reports that within the region, 52.29% individuals of the active population work within their own municipality (54,073 men and 36,868 women), 24.19% work outside their municipality (24,576 men and 17,495 women), 23.16% work in another area (26,556 men and 13,730 women), and 0.36% work outside the country (482 men and 137 women) [150]. Figure 12 shows the percentage of daily commuters engaging in employment outside their residing municipality, compared to the overall number of active workers across various municipalities and cities within the study area. The majority of daily migrants working outside their municipality are drawn to the metropolitan area of Novi Sad, encompassing municipalities such as Sremski Karlovci, Temerin, Beočin, Žabalj, and Irig [149]. In Zrenjanin, despite a significant number of daily migrations, they are dispersed, and due to the city's underdevelopment, there is no gravitational zone that could alleviate the depopulation process in the long term [149]. Subotica's migration area is the least developed, resulting in most daily migrations occurring between smaller municipalities, with only a portion directed towards Subotica [149].

Figure 12 
               Share of daily migrants who perform an occupation in another municipality. Source: [150], revised by authors.
Figure 12

Share of daily migrants who perform an occupation in another municipality. Source: [150], revised by authors.

Daily migrants studying in another municipality represent a significant portion of the population in Beočin, Temerin, Petrovaradin, and Sremski Karlovci, constituting over 35% of the population [150]. Conversely, in Novi Sad, less than 5% of daily migrants pursue education in another municipality [150]. Figure 13 shows share of daily migrants who go to school or university in another municipality in the total number of pupils and students, by municipalities and cities in the study area. Comparing the geographical distribution of traffic accidents, fatalities, and injuries by participation category (Figure 9) with the distribution of daily migrants (Figure 12 and Figure 13), it is evident that the highest number of traffic accidents occur around the city of Novi Sad, illustrating the correlation between these phenomena.

Figure 13 
               Share of daily migrants who go to school/university in another municipality. Source: [150], revised by authors.
Figure 13

Share of daily migrants who go to school/university in another municipality. Source: [150], revised by authors.

The Statistical Office of the Republic of Serbia solely reports data on daily migrations based on the place of residence, posing a significant limitation for sociological analysis of this phenomenon [149]. Therefore, there is a need to collect more detailed information regarding the structural characteristics of daily migrations to facilitate comprehensive analyses of the relationship between daily migrations and traffic accidents in future research.

As previously mentioned, daily migrations in the study area exceed the national average. Therefore, improving road conditions is crucial. This improvement would not only decrease the number of traffic accidents but also reduce fatalities and injuries, thereby lessening road trauma. Figure 14 presents two examples of poor road maintenance in the areas of Subotica (Figure 14a) and Novi Sad (Figure 14b).

Figure 14 
               Examples of poor road maintenance in the area of (a) Subotica and (b) Novi Sad. Source: 14a. Authors (12.01.2024), 14b. Dragan Kadić (18.05.2022).
Figure 14

Examples of poor road maintenance in the area of (a) Subotica and (b) Novi Sad. Source: 14a. Authors (12.01.2024), 14b. Dragan Kadić (18.05.2022).

Road trauma stands as one of the leading epidemiological problems worldwide [4]. Unfortunately, there is no organized and systematic monitoring of road trauma in the AP Vojvodina [4,5]. Until 1992, the Provincial Secretariat for Internal Affairs collected relevant data on traffic traumas. However, with its abolition, this responsibility shifted to the Department of the Ministry of Internal Affairs in Novi Sad until 1995 when data collection on traffic traumas ceased entirely [4,5]. The absence of legal provisions regulating the obligation to report the consequences of traffic accidents, along with the lack of institutions organizing the collection, processing, analysis, and storage of data related to traffic trauma, is a notable gap compared to highly developed countries [4,5].

Doctors who treat casualties must commit themselves not only to providing optimum care but also to becoming equally involved in the epidemiological and sociological aspects of road trauma prevention [151]. The prevention of trauma requires a threefold approach: prevent the traffic accident, prevent injury in it, and prevent injury aggravation after the traffic accident [151].

Training for teams managing trauma care is vital. It is generally acknowledged that the standard for such training in high-income countries is the Advanced Trauma Life Support course of the American College of Surgeons [152]. However, the applicability of this course to low-income and middle-income countries is yet to be established [152]. In Trinidad and Tobago, for instance, the introduction of the Advanced Trauma Life Support course for doctors and the Pre-Hospital Trauma Life Support course for paramedics, together with improved emergency equipment, led to improvements in trauma care and a decrease in trauma mortality, both in the field and in hospital [152,153]. Rehabilitation services are an essential component of the comprehensive package of initial and post-hospital care of the injured. They help minimize future functional disabilities and restore the injured person to an active life within society [152].

Despite these valuable findings, the study has limitations, mainly due to the use of publicly available municipal-level data. The inability to access precise accident locations, occurrence time frames, and other characteristics hindered a more comprehensive analysis.

This type of analysis, utilizing GIS-based hotspot analysis, can serve as a crucial tool for road authorities in decision-making and holds potential for future improvements. Advanced GIS applications contribute to a better understanding of accident features, aiding efforts to make roads safer over the past half-century.

Potential next steps for enhancing road safety include the development of a national crash hotspot (blackspot) identification manual, regular spatial and temporal mapping of crash patterns, training safety engineers in crash hotspot identification methodologies, and adopting GIS technology advancements [23]. Based on the obtained results, it is crucial for relevant authorities to take appropriate actions at identified hotspots [154]. Effective road safety management has the potential to reduce the number of road accidents, fatalities, and injuries, leading to cost savings [4,155]. In developed countries, good habits of safe cycling are taught at a young age, which is certainly not the case in the territory of the AP Vojvodina [4,5].

In order to achieve a downward trend in accident mortality and establish a stable road safety system in the future, funds allocated for improving road safety must be directed towards implementing measures that have the most significant impact on enhancing the current situation [4,156].

The protective measures that can be applied encompass:

  • Primary prevention measures (they aim to prevent the occurrence of road accidents);

  • Secondary prevention measures (they aim to mitigate the severity of accidents);

  • Improvement of road and environmental elements;

  • Tertiary prevention measures (they aim to mitigate the consequences of accidents that have already occurred);

  • First aid;

  • Transport;

  • Treatment and rehabilitation; and

  • Punitive measures (i.e. the imposition of appropriate sanctions on negligent drivers) [4,157].

Identifying hotspots where traffic accidents cluster would facilitate the definition and implementation of measures to prevent road trauma in vulnerable areas. Local self-governments should collaborate more closely with police administrations and relevant epidemiological services of health institutions in the AP Vojvodina to adapt and intensify the road trauma prevention program. Establishing a unified system for registering and monitoring road accident victims is crucial for gaining insight into the number of victims and their clinical conditions, ultimately impacting the establishment of protective measures.

The balance between prevention on the one hand and investigation and procedure on the other needs to be addressed [151]. Productive research adequately funded is essential if prevention initiatives are to succeed in reducing the incidence of injury in road [151].

Detecting long-term trends in crashes or casualties in these focus areas could significantly influence future roadway safety management [14]. Understanding these trends is likely to affect the planning process for safety countermeasures and can facilitate future safety budget planning [14]. The lack of financial resources remains a limiting factor in reviewing existing and introducing new road safety measures, necessitating a more intensive search for incentives. A punitive policy towards negligent drivers and increased fines for traffic violations could help reduce the number of road accidents, fatalities, and injuries. Implementing these measures would not only improve public health in the AP Vojvodina but also reduce the financial costs associated with treating patients and repairing vehicles.

The adoption of newer legislation has contributed to a decline in the number of people killed in road accidents. The implementation of the Road Traffic Safety Strategy has further contributed to the reduction in both deaths and injuries. This is evident from the fact that the number of registered vehicles has more than doubled from 1990 to 2019, while the number of road accidents has decreased almost fourfold.

5 Conclusion

Utilizing the Getis-Ord G i statistics within the GIS environment and employing Men-Kendall statistics, this study conducted a thorough analysis of traffic accidents in the territory of the AP Vojvodina, examining their various characteristics. As one of the pioneering studies to identify accident hotspots in this region, it lays the foundation for subsequent research aimed at easily pinpointing and investigating factors influencing road accidents. This ought to be the initial step in the comprehensive mitigation process, complementing other protective measures aimed at minimizing road-related incidents.

Future research should focus on investigating the locations of traffic accidents using x and y coordinates to identify hotspots through dot displays. Consequently, it is recommended to publicly release statistical data related to road accident characteristics, enabling more sophisticated geographical analyses. Collaborative efforts involving experts from diverse disciplines should be encouraged to collectively shape new road safety strategies or adapt existing ones. Such collaborative research endeavours could significantly enhance road safety by directing targeted protective measures to identified hotspots, consequently reducing the overall number of road accidents and, in turn, diminishing traffic fatalities and injuries.

Acknowledgements

This study was supported by the Ministry of Education, Science and Technological Development of the Republic of Serbia (Contract numbers 451-03-68/2022-14/200091 and 451-03-68/2022-14/200125).

  1. Funding information: This research received no external funding that has supported the work.

  2. Author contributions: Conceptualization and methodology: E. K. and T. L.; Formal analysis: E. K., T. L., Z. K., T. S., A. S. M., and V. S.; GIS software and mapping: Z. K.; Technical editing: E. K. and Z. K.; Supervision: T. L.; All authors discussed the results and contributed to the final manuscript. All authors have read and agreed to the published version of the manuscript.

  3. Conflict of interest: Authors state no conflict of interest.

  4. Data availability statement: All results are presented through tables entries.

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Received: 2024-01-16
Revised: 2024-03-12
Accepted: 2024-03-19
Published Online: 2024-04-13

© 2024 the author(s), published by De Gruyter

This work is licensed under the Creative Commons Attribution 4.0 International License.

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  76. Application of the wavelet transform and Hilbert–Huang transform in stratigraphic sequence division of Jurassic Shaximiao Formation in Southwest Sichuan Basin
  77. Structural detachment influences the shale gas preservation in the Wufeng-Longmaxi Formation, Northern Guizhou Province
  78. Distribution law of Chang 7 Member tight oil in the western Ordos Basin based on geological, logging and numerical simulation techniques
  79. Evaluation of alteration in the geothermal province west of Cappadocia, Türkiye: Mineralogical, petrographical, geochemical, and remote sensing data
  80. Numerical modeling of site response at large strains with simplified nonlinear models: Application to Lotung seismic array
  81. Quantitative characterization of granite failure intensity under dynamic disturbance from energy standpoint
  82. Characteristics of debris flow dynamics and prediction of the hazardous area in Bangou Village, Yanqing District, Beijing, China
  83. Rockfall mapping and susceptibility evaluation based on UAV high-resolution imagery and support vector machine method
  84. Statistical comparison analysis of different real-time kinematic methods for the development of photogrammetric products: CORS-RTK, CORS-RTK + PPK, RTK-DRTK2, and RTK + DRTK2 + GCP
  85. Hydrogeological mapping of fracture networks using earth observation data to improve rainfall–runoff modeling in arid mountains, Saudi Arabia
  86. Petrography and geochemistry of pegmatite and leucogranite of Ntega-Marangara area, Burundi, in relation to rare metal mineralisation
  87. Prediction of formation fracture pressure based on reinforcement learning and XGBoost
  88. Hazard zonation for potential earthquake-induced landslide in the eastern East Kunlun fault zone
  89. Monitoring water infiltration in multiple layers of sandstone coal mining model with cracks using ERT
  90. Study of the patterns of ice lake variation and the factors influencing these changes in the western Nyingchi area
  91. Productive conservation at the landslide prone area under the threat of rapid land cover changes
  92. Sedimentary processes and patterns in deposits corresponding to freshwater lake-facies of hyperpycnal flow – An experimental study based on flume depositional simulations
  93. Study on time-dependent injectability evaluation of mudstone considering the self-healing effect
  94. Detection of objects with diverse geometric shapes in GPR images using deep-learning methods
  95. Behavior of trace metals in sedimentary cores from marine and lacustrine environments in Algeria
  96. Spatiotemporal variation pattern and spatial coupling relationship between NDVI and LST in Mu Us Sandy Land
  97. Formation mechanism and oil-bearing properties of gravity flow sand body of Chang 63 sub-member of Yanchang Formation in Huaqing area, Ordos Basin
  98. Diagenesis of marine-continental transitional shale from the Upper Permian Longtan Formation in southern Sichuan Basin, China
  99. Vertical high-velocity structures and seismic activity in western Shandong Rise, China: Case study inspired by double-difference seismic tomography
  100. Spatial coupling relationship between metamorphic core complex and gold deposits: Constraints from geophysical electromagnetics
  101. Disparities in the geospatial allocation of public facilities from the perspective of living circles
  102. Research on spatial correlation structure of war heritage based on field theory. A case study of Jinzhai County, China
  103. Formation mechanisms of Qiaoba-Zhongdu Danxia landforms in southwestern Sichuan Province, China
  104. Magnetic data interpretation: Implication for structure and hydrocarbon potentiality at Delta Wadi Diit, Southeastern Egypt
  105. Deeply buried clastic rock diagenesis evolution mechanism of Dongdaohaizi sag in the center of Junggar fault basin, Northwest China
  106. Application of LS-RAPID to simulate the motion of two contrasting landslides triggered by earthquakes
  107. The new insight of tectonic setting in Sunda–Banda transition zone using tomography seismic. Case study: 7.1 M deep earthquake 29 August 2023
  108. The critical role of c and φ in ensuring stability: A study on rockfill dams
  109. Evidence of late quaternary activity of the Weining-Shuicheng Fault in Guizhou, China
  110. Extreme hydroclimatic events and response of vegetation in the eastern QTP since 10 ka
  111. Spatial–temporal effect of sea–land gradient on landscape pattern and ecological risk in the coastal zone: A case study of Dalian City
  112. Study on the influence mechanism of land use on carbon storage under multiple scenarios: A case study of Wenzhou
  113. A new method for identifying reservoir fluid properties based on well logging data: A case study from PL block of Bohai Bay Basin, North China
  114. Comparison between thermal models across the Middle Magdalena Valley, Eastern Cordillera, and Eastern Llanos basins in Colombia
  115. Mineralogical and elemental analysis of Kazakh coals from three mines: Preliminary insights from mode of occurrence to environmental impacts
  116. Chlorite-induced porosity evolution in multi-source tight sandstone reservoirs: A case study of the Shaximiao Formation in western Sichuan Basin
  117. Predicting stability factors for rotational failures in earth slopes and embankments using artificial intelligence techniques
  118. Origin of Late Cretaceous A-type granitoids in South China: Response to the rollback and retreat of the Paleo-Pacific plate
  119. Modification of dolomitization on reservoir spaces in reef–shoal complex: A case study of Permian Changxing Formation, Sichuan Basin, SW China
  120. Geological characteristics of the Daduhe gold belt, western Sichuan, China: Implications for exploration
  121. Rock physics model for deep coal-bed methane reservoir based on equivalent medium theory: A case study of Carboniferous-Permian in Eastern Ordos Basin
  122. Enhancing the total-field magnetic anomaly using the normalized source strength
  123. Shear wave velocity profiling of Riyadh City, Saudi Arabia, utilizing the multi-channel analysis of surface waves method
  124. Effect of coal facies on pore structure heterogeneity of coal measures: Quantitative characterization and comparative study
  125. Inversion method of organic matter content of different types of soils in black soil area based on hyperspectral indices
  126. Detection of seepage zones in artificial levees: A case study at the Körös River, Hungary
  127. Tight sandstone fluid detection technology based on multi-wave seismic data
  128. Characteristics and control techniques of soft rock tunnel lining cracks in high geo-stress environments: Case study of Wushaoling tunnel group
  129. Influence of pore structure characteristics on the Permian Shan-1 reservoir in Longdong, Southwest Ordos Basin, China
  130. Study on sedimentary model of Shanxi Formation – Lower Shihezi Formation in Da 17 well area of Daniudi gas field, Ordos Basin
  131. Multi-scenario territorial spatial simulation and dynamic changes: A case study of Jilin Province in China from 1985 to 2030
  132. Review Articles
  133. Major ascidian species with negative impacts on bivalve aquaculture: Current knowledge and future research aims
  134. Prediction and assessment of meteorological drought in southwest China using long short-term memory model
  135. Communication
  136. Essential questions in earth and geosciences according to large language models
  137. Erratum
  138. Erratum to “Random forest and artificial neural network-based tsunami forests classification using data fusion of Sentinel-2 and Airbus Vision-1 satellites: A case study of Garhi Chandan, Pakistan”
  139. Special Issue: Natural Resources and Environmental Risks: Towards a Sustainable Future - Part I
  140. Spatial-temporal and trend analysis of traffic accidents in AP Vojvodina (North Serbia)
  141. Exploring environmental awareness, knowledge, and safety: A comparative study among students in Montenegro and North Macedonia
  142. Determinants influencing tourists’ willingness to visit Türkiye – Impact of earthquake hazards on Serbian visitors’ preferences
  143. Application of remote sensing in monitoring land degradation: A case study of Stanari municipality (Bosnia and Herzegovina)
  144. Optimizing agricultural land use: A GIS-based assessment of suitability in the Sana River Basin, Bosnia and Herzegovina
  145. Assessing risk-prone areas in the Kratovska Reka catchment (North Macedonia) by integrating advanced geospatial analytics and flash flood potential index
  146. Analysis of the intensity of erosive processes and state of vegetation cover in the zone of influence of the Kolubara Mining Basin
  147. GIS-based spatial modeling of landslide susceptibility using BWM-LSI: A case study – city of Smederevo (Serbia)
  148. Geospatial modeling of wildfire susceptibility on a national scale in Montenegro: A comparative evaluation of F-AHP and FR methodologies
  149. Geosite assessment as the first step for the development of canyoning activities in North Montenegro
  150. Urban geoheritage and degradation risk assessment of the Sokograd fortress (Sokobanja, Eastern Serbia)
  151. Multi-hazard modeling of erosion and landslide susceptibility at the national scale in the example of North Macedonia
  152. Understanding seismic hazard resilience in Montenegro: A qualitative analysis of community preparedness and response capabilities
  153. Forest soil CO2 emission in Quercus robur level II monitoring site
  154. Characterization of glomalin proteins in soil: A potential indicator of erosion intensity
  155. Power of Terroir: Case study of Grašac at the Fruška Gora wine region (North Serbia)
  156. Special Issue: Geospatial and Environmental Dynamics - Part I
  157. Qualitative insights into cultural heritage protection in Serbia: Addressing legal and institutional gaps for disaster risk resilience
Heruntergeladen am 20.10.2025 von https://www.degruyterbrill.com/document/doi/10.1515/geo-2022-0630/html
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