INSECT Intersection simulation model

INSECT (INterSECTion simulation model) is a computer suite of three programs for modelling unsignalised intersections and signalised intersections. From a simple intersection or roundabout description it produces estimates of delay, stops, fuel consumption, queue lengths and other measures of traffic operation. It is useful for: 1) comparing alternative treatments at a particular location eg, various intersection arrangements, roundabout arrangements, different traffic volumes; 2) analysing traffic operations at unsignalised and signalised intersections. The model is based on a vehicle by vehicle simulation technique with vehicle movements governed by car-following principles. Conflict resolution and lane changing are based on gap acceptance criteria. The program can construct intersection geometry from a minimum amount of data by using a number of default values. However, if required, detailed specification for intersection geometry may be specified by the user. Besides producing printed reports, the simulation will display pictures of the intersection to show the trend of the traffic operation.