Analysis on Driver’s and Pedestrian’s Perception for the Evaluation of Cycle Length at Under-Saturated Signalized Intersections

The aim of this study is to propose a framework for evaluating cycle lengths based on user’s perceptions and behaviors at under-saturated signalized intersections by following risk management methodology. Firstly, analyzing both frequency of risk and intensity of risk at inter-green periods, it is made clear that risky behaviors for through/left-turn movements are affected by delay, and for right-turn movements is influenced of traffic conflicts. Secondly, risky behaviors at inter-green periods are expressed by a behavior modeling technique in order to weight among the risk incidents. These models are explained by delay and various traffic conflicts, which are influenced by cycle lengths. The estimated parameters of these models quantitatively indicate that longer cycle lengths induce more risky behaviors at inter-green periods. Finally, via a sensitivity analysis, the impact of cycle lengths and intersection size on risk taking behaviors is demonstrated.