Delays at fixed-time traffic signals under time-dependent traffic conditions

Several approximative formulae have been developed in the past for the calculation of average delays at signalised intersections under time-dependent traffic conditions. However, there is a remarkable discrepancy between the results. As a new approach, the idea of Markov chains has been employed to calculate delays on a numerically-exact basis. Computations enable the evaluation of average delays of drivers at fixed-time traffic signals under time-dependent input volumes and under Poisson or non-Poisson conditions. On the whole, the results show that Akçelik’s estimation of áPoisson or non-Poisson conditions. On the whole, the results show that Ak