Milan P. Vujanic

Pedestrian Behavior at Signalized Pedestrian Crossings

AbstractThe objective of this research was to define eventual differences in models of pedestrian behavior at signalized pedestrian crossings, with and without countdown displays. The outcomes of this work represent a contribution to the harmonization of positions on the effect of a countdown display on pedestrian behavior. Video recordings at two completely similar pedestrian crossings enabled the collection of pedestrian behavior data (crossing at the red light), which included different categories (gender, age, individual/group, and “slow” pedestrians), collected in different conditions (during certain red light intervals and traffic volume). The results of the research showed that a statistically significant larger number of pedestrian offenders occurred at pedestrian crossings without countdown displays rather than at crossings with countdown displays. The presence of a countdown display significantly reduced the number of women offenders in particular. The number of offenders in the first and last f...

Estimation of the traffic accidents costs in Serbia by using dominant costs model

Abstract This paper presents estimation of the traffic accident costs in Serbia, based on original dominant costs model. Dominant costs model uses human capital approach and this model is developed for simple and quick calculation of the traffic accidents costs, because other simple methods as 1 million rules, are not suitable for estimation of the traffic accident costs in the countries with a low GDP per capita. Knowing the costs of traffic accidents is of crucial importance for establishing traffic safety to the level defined by the size of costs made as a consequence of unsafely. So, politicians, decision makers and stakeholders in the field of traffic safety often need quick estimation of the traffic accident costs and economic effects of the particular measures which are applied for decreasing the number and severity of traffic accidents. The estimation of the level of the traffic accidents costs in Serbia, based on the official data (from the Ministry of Interior of the Republic of Serbia) about tr...

How road traffic safety campaigns influence seat belt use – case study for the city of Banja Luka

Original scientific paper Use of seat belts is one of the most effective ways to reduce the number of fatalities and injuries in road accidents. Road traffic safety campaigns are one of the ways to influence the level of seat belt usage. In this regard, the question is: how can we affect the percentage of use of seat belts while driving and what is the impact of the campaign on the usage of seat belts? The survey, which was conducted in Banja Luka, attempted to answer the aforementioned questions. The experimental method used during the research was conducted by recording the use of seat belts before, during and after the launch of the campaign in road safety, and surveying the attitudes of road users by questionnaire alongside with the campaign. By recording the level of use of the seat belt before the campaign, we observed a very low level of use. During and after the campaign, there is an increase of seat belts usage, suggesting that well designed campaign in road safety which includes all stakeholders in charge, responsible and concerned for the safety of participants, can yield positive results.

The analysis of influence of individual and environmental factors on 2-wheeled users’ injuries

ABSTRACT Objective: Powered 2-wheeled motor vehicles (PTWs) are one of the most vulnerable categories of road users. Bearing that fact in mind, we have researched the effects of individual and environmental factors on the severity and type of injuries of PTW users. The aim was to recognize the circumstances that cause these accidents and take some preventive actions that would improve the level of road safety for PTWs. Methods: In the period from 2001 to 2010, an analysis of 139 road accidents involving PTWs was made by the Faculty of Transport and Traffic Engineering in Belgrade. The effects of both individual (age, gender, etc.) and environmental factors (place of an accident, time of day, etc.) on the cause of accidents and severity and type of injuries of PTWs are reported in this article. Analyses of these effects were conducted using logistic regression, chi-square tests, and Pearsons correlation. Results: Factors such as categories of road users, pavement conditions, place of accident, age, and time of day have a statistically significant effect on PTW injuries, whereas other factors (gender, road type; that is, straight or curvy) do not. The article also defines the interdependence of the occurrence of particular injuries at certain speeds. The results show that if PTW users died of a head injury, these were usually concurrent with chest injuries, injuries to internal organs, and limb injuries. Conclusions: It has been shown that there is a high degree of influence of individual factors on the occurrence of accidents involving 2-wheelers (PTWs/bicycles) but with no statistically significant relation. Establishing the existence of such conditionalities enables identifying and defining factors that have an impact on the occurrence of traffic accidents involving bicyclists or PTWs. Such a link between individual factors and the occurrence of accidents makes it possible for system managers to take appropriate actions aimed at certain categories of 2-wheelers in order to reduce casualties in a particular area. The analysis showed that most of the road factors do not have a statistically significant effect on either category of 2-wheeler. Namely, the logistic regression analysis showed that there is a statistically significant effect of the place of accident on the occurrence of accidents involving bicyclists.

Analysis of possibility for traffic safety improvement based on Serbian traffic violation database analysis

In order to improve traffic safety, both reactive and proactive approaches are used. Unlike the reactive, the proactive approach ’does not wait’ for traffic accidents to happen to start analysing traffic safety conditions. The proactive approach implies traffic safety improvement based on the analysis of socalled indirect traffic safety indicators, like the behaviuor of traffic participants, and the analysis of unsafe traffic participants behaviours that are detected and registered in traffic violations database, are specially interesting. This paper analyzes the possibilities of traffic safety improvement based on Serbian traffic violation database analysis. It was noticed that not all data from database can be used for traffic safety improvement, and at the same time, this paper represents a method in selecting socalled relevant data, which can be used for traffic safety improvement by using adequate preventive activities and measures. In order to define the measures for traffic safety improvement, a possible way of further analysis for some of the relevant data was also presented in this work.

Roadside public survey approach in black spot identification on rural roads: case study

This paper examines the possibility of applying the Subjective Black Spot Identification Method on state roads. A survey was conducted using interviews about 659 drivers’ attitudes on the existence...

Selection and assessment of the relevant data for reducing the number of red-light running

AbstractAlthough traffic light controlled intersections separate, the traffic flows by time and space, road traffic accidents still occur, usually due to Red-Light Running (RLR). In order to define countermeasures to solve this problem, it is necessary to collect and analyze certain data that will indicate type of measures, which should be applied. In this paper, it was done on the example of one 3-leg and one 4-leg intersection where citizens provided information about frequent RLR to the City Administration of Belgrade (Serbia). The statistical significance of differences between the collected data was tested by ANOVA analysis and by PostHoc Tukey test, which showed that forecasting of second of RLR after red-light onset could effectively be conducted by Cubic distribution. In order to define the so-called RLR risk indicator for the intersection, the use of the Danger Degree (DD) indicator, that presents the rate between the number of dangerous situations caused by RLR and the total number of RLR, was p...