Development of Delay Model at Intersections - A Case Study of Ahmedabad City
Author(s):
Pooja Gupta , N.G.Raval
Keywords:
Abstract
Delay is the one of the most vital design criteria utilized for performance evaluation of signalized intersections. It plays a vital role in planning, designing and control of signalized intersections. The accurate measurement of delay at intersections is of prime importance when determining the LOS of the road. In pre-timed control, vehicle delays can be minimized or reduced by proper design of signal timings and phasing. Vehicle delays incorporate numerous parameters, for example, signal timing, number of phases, vehicle headways, saturation flow, queuing etc. Among these parameters vehicle queue is formed by unbalanced signal timings or unexpected demand values. On the other hand, composition of vehicles can be effective on queue forming especially in discharging case. This paper discusses the estimation of stopped type of delay at Memco and Pakwan intersections of Ahmedabad city, the commercial capital of Gujarat state. The delay is calculated by counting the number of vehicles in queue during the red time. Models are developed for the calculation of delay considering the composition of vehicles, road width, cycle time, green time and red time. Many researchers have also developed models for estimation of delay for homogeneous condition of traffic, so those values do not match with field data. The developed models give the values near to the observed values. It can be used for the heterogeneous traffic condition.
Article Details
Unique Paper ID: 143606
Publication Volume & Issue: Volume 2, Issue 12
Page(s): 129 - 133
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