A Leading Pedestrian Interval (LPI) typically gives pedestrians a 3–7 second head start when entering an intersection with a corresponding green signal in the same direction of travel.
LPIs enhance the visibility of pedestrians in the intersection and reinforce their right-of-way over turning vehicles, especially in locations with a history of conflict.
LPIs have been shown to reduce pedestrian-vehicle collisions as much as 60% at treated intersections.
Pedestrians are given a minimum 3–7 second head start entering the intersection.
Through and turning traffic are given the green light. Turning traffic yields to pedestrians already in the crosswalk.
Adapted from the Urban Street Design Guide, published by Island Press.