Simulation of Heterogeneous Motorised Traffic at a Signalised Intersection

Abstract

The characteristics of heterogeneous traffic (with variation in vehicle length) are significantly different from those for homogeneous traffic. The present study describes an overview of the development and validation of a stochastic heterogeneous traffic-flow simulation model for an urban single-lane two-way road, with controlled intersection. In this paper, the interaction between vehicle types during manoeuvres at the intersection are analysed in detail. Two different motorised vehicle types are considered namely cars and buses (or similar length vehicles). A twocomponent cellular automata (CA) based model is used. Traffic flow data, captured manually by Dublin City Council at a local intersection, are analysed to give a baseline on how the distribution of short and long vehicles affect throughput. It is anticipated that such detailed studies will aid traffic management and optimisation strategies for traffic flow.

Analysis of a cellular automaton model for car traffic with a slow-to-stop rule

“…The simulation of large traffic networks can be performed in multiple real-time. Several other researchers have devised related schemes [13,14,15,16,17,18,19].…”

Modelling and simulation of vehicle movements at signalised junctions

“…of the deterministic rules, the BML model is regarded as a deterministic model (Fukui and Ishibashi, 1996 Jin et al (2001) Lane changing behaviour at approach and departure lanes are modelled It is found that traffic performance is affected by both traffic conditions and signal control Wu et al (2005) Vehicle interactions at a Tjunction with signal control are analysed Mixed vehicle type simulation based on BML model. Vehicle compositions will affect junction capacity Deo and Ruskin (2006) Two different vehicle types, namely cars and buses, (or similar length vehicles), are simulated Mixed vehicle type simulation; analyse the effect of vehicle type distribution Spyropoulou (2007) Discusses the feasibility of using CA models to simulate signalised junction. Relationships between randomisation inputs and simulation outputs are studied (Akçelik et al, 1999;PTV, 2006).…”