Abstract
A traffic adaptive signal co- ordination scheme for co- ordinating isolated traffic signals on an arterial road without incurring the cost of installing cables or leasing communication links is described. The co- ordination scheme is based on a spectral analysis, called a short- term fourier analysis (STFA), of traffic approaching each isolated intersection.Essential signal co- ordination parameters, namely, cycle time and offset are derived on- line.The adaptive algorithm has been implemented on a microprocessor to evaluate and simulate cableless signal co- ordination.