To determination of traffic delay at controlled intersection
Date
2020-02-26
Journal Title
Journal ISSN
Volume Title
Publisher
Видавництво Львівської політехніки
Lviv Politechnic Publishing House
Lviv Politechnic Publishing House
Abstract
Taking into account the importance of time spent on passing distances of vehicle
routes that lie across city road network (RN), well-known approaches to the determination of vehicle
delay in the movement process (waiting for passage and the passage) of controlled intersections are
analyzed. Reasons that cause the growth of these delays and that have an impact on traffic light
cycle duration are counted. At the same time, the authors justify the need for change in the existing
term transport delay. It should be interpreted (concerning intersection passage) as a delay only in
the case when the group of vehicles that have stopped before intersection could not pass this
intersection during the permission signal and wait for the next such signal. If the vehicles in the first
group could pass the intersection (possibly taking into account also waiting for the permission
signal), then this is not a delay but the necessary component of the technological process of the route
passage. From this point of view, an approach in the traffic delay determination method at
controlled intersections is proposed taking into account the particular components of Webster`s
formula and the volume-capacity ratio of RN that determine the motorization level of the city
population. A comparison of the results of delay calculation, determined with the use of the proposed
method and Webster’s formula, is carried out.
Description
Keywords
vehicle, transport delay, controlled intersection, traffic light cycle, motorization, traffic flow, intensity, saturation flow
Citation
Fornalchyk Y. To determination of traffic delay at controlled intersection / Yevhen Fornalchyk, Volodymyr Hilevych // Transport Technologies. — Lviv : Lviv Politechnic Publishing House, 2020. — Vol 1. — No 1. — P. 65–72.