Traffic signal timing determination: the Cabal model

Cabal uses a genetic algorithm to optimise traffic signals. The aim in this early version of Cabal is to determine effective timing plans for an isolated intersection using realworld flow data matrices. Initial objectives are minimisation of delays, stops and queue lengths using fixed factor weights. Cabal optimises a cyclic signal control scheme made up of a set sequence of stages. Results of tests on a 5-leg intersection indicate that Cabal could operate effectively in realtime.