Delay Model for Signalised Intersections Based On M/D/N Queueing System

Le résumé fourni par la source

Delay is a fundamental measure for evaluating the performance of the traffic systems.However, the stochastic nature of vehicle arrivals and discharges at the intersection introduces significant complexity in its estimation.Its estimation becomes even more challenging in developing countries like India, where traffic exhibits mixed and lane-free (MLF) characteristics.Most of the delay models are derived based on the queuing theory concepts and traditionally considered the queue at a signal as M/D/1, indicating random arrival, deterministic discharge and one server per lane.This study considers the scenario with multiple servers to cater to the parallel movement of vehicles under MLF conditions, making the queuing system as M/D/n.Three different approaches to incorporate this, along with the server with vacation concept, are developed and compared in this study.The models were evaluated using VISSIM simulations on validated networks of two Indian intersections: Mhalgi Nagar in Nagpur and Kaiveli in Chennai.

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