Modeling Pedestrian Walking Speed at Signalized Crosswalks Considering Crosswalk Length and Signal Timing

Quantifying the effects of crosswalk length and signal timing on pedestrian walking speed is an important requirement for providing a rational safety assessment and improving existing operational policies at signalized intersections. This study investigates the effects of pedestrian green time (PG), crosswalk length and pedestrian crossing direction on pedestrian walking speed at signalized crosswalk. It is assumed that the pedestrian walking speeds consist of two components v1 and v2 at two consecutive halves of crosswalk. Empirical analysis shows that pedestrian walking speed increases as PG proceeds. Longer crosswalk corresponds to higher walking speed. Furthermore, a comparison of pedestrian speed models at PG and PFG (pedestrian flashing green time) demonstrates that pedestrian walking speeds at PFG are higher and more variable than at PG.