A genetic algorithm to optimise signal phasing in area traffic control

In this paper the use of a genetic algorithm to find a good assignment of signal control stages to links in the network (the link-stage assignment) for TRANSYT is described. In the genetic process, the partially matched crossover operator and exchange mutation operator are used to maintain the feasibility of the sequence of phases. A special conversion algorithm is devised to convert the phase sequences into the link-stage assignment. Results from tests using data from a SCOOT region in Leicester are given.