Detailed Analyses of the Effects of Parallel Pedestrian Flow for Vehicle Right Turn Volume at Signalised Intersections



Detailed Analyses of the Effects of Parallel Pedestrian Flow for Vehicle Right Turn Volume at Signalised Intersections

Authors

Zs. KOVACS IGAZVOLGYI, BUTE Department of Highway and Railway Engineering, L. KISGYORGY, BUTE Department of Highway and Railway Engineering

Description

The paper presents the results of the correlation among the high pedestrian volume and right-turning vehicle flow at signalised intersection and the length of the crossings. The long zebra crossings have a ’gate effect’.

Abstract

The paper presents the results of the correlation among the high pedestrian volume and right-turning vehicle flow at signalised intersection and the length of the crossings.

The vehicles have to give yield to pedestrians on zebra crossings (~1000 pedestrians/hour).
The right-turn lane’s capacity is very low.
The reason is the high pedestrian volume on Üllői road’s pedestrian crossing.

The number of the crossed vehicles is presented for different pedestrian volume.
The vehicle number comes from the video records analysis. The experience is that the capacity is drastically low and there is traffic jam in the lane, which obstructs the direct lanes toward Múzeum Ringroad.
The measurements and the results of VISSIM microsimulation are compared in the paper.
Based on the site measurements and VISSIM simulations can be evaluated the lane’s capacity of this place for different pedestrian volumes.
Until ~10P/min pedestrian flow the right turn lane capacity decreased not drastically.
The 4 s longer phase time has a positive effect, but only for low pedestrian volume.
The length of the zebra crossings could be decreased the free time for turning volumes. The long zebra crossings have a ’gate effect’.
The other problem is that the pedestrian free signal is too short for lack of vulnerable roads users.
In this research we analysed more intersections in Budapest, and we would like to optimize the same pedestrian and right-turn vehicles’ volume conflicts in function of the zebra crossing’s length.
We give recommendations for the right turn lane’s capacity for different pedestrian volume.

Keywords: signalised intersection, pedestrian volume, same vehicle and pedestrian phase, VISSIM microsimulation, right-turn lane, length of the zebra crossing

Publisher

Association for European Transport