One Approach to Quantifying Rainfall Impact on the Traffic Flow of a Specific Freeway Segment

Marijo Vidas, Vladan Tubić, Ivan Ivanović and Marko Subotić
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Marijo Vidas: Faculty of Traffic and Transport Engineering, University of Belgrade, 11010 Beograd, Serbia
Vladan Tubić: Faculty of Traffic and Transport Engineering, University of Belgrade, 11010 Beograd, Serbia
Ivan Ivanović: Faculty of Traffic and Transport Engineering, University of Belgrade, 11010 Beograd, Serbia
Marko Subotić: Faculty of Transport and Traffic Engineering, University of East Sarajevo, 71123 Sarajevo, Bosnia and Herzegovina

Sustainability, 2022, vol. 14, issue 9, 1-16

Abstract: Spatial constraints in urban areas very often lead to the application of traffic management measures to meet transport demands. Accordingly, it is very important to identify all potential impacts that could lead to reductions in the street network’s capacity. One such impact is weather conditions. The main motivation of this research is to analyze the impacts of rainfall on one of the most important segments of Belgrade’s street network that represents part of a freeway passing the city center. Our focus is on quantifying the impact of rainfall on speed and capacity. This paper proposes a new approach to analyzing the rainfall impact at the traffic lane level that provides additional possibilities to apply traffic management measures on the traffic lane level instead of at the direction level only. Functional dependences and differences in capacity and speed on traffic lanes were found under the influence of different rainfall intensities. Reductions in free-flow speed depend on the rain category and traffic lanes and vary from 4.5% to 11.58%, while reductions in traffic lane capacity range from 2.46% to 12.97%. We demonstrate the importance of considering the impact of rainfall at the traffic lane level, which could be quality input data for defining appropriate traffic management measures to mitigate the negative impacts.

Keywords: rainfall; traffic lane; speed; capacity; saturation flow (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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