The Leading Pedestrian Interval (LPI), also know as Pedestrian Head Start Signal program provides an advanced walk signal so that pedestrians begin to cross the street before vehicles get a green signal. The purpose of LPI is to provide pedestrians an advantage over turning vehicles at intersections where it is determined that pedestrians, wishing to enter the crosswalk, were being hindered by aggressive right turns. The LPI is used to improve motorist yielding behaviour toward pedestrians in a crosswalk. The LPI is particularly helpful for older pedestrians, as they may take longer to occupy the crosswalk following the start of a “walk” indication, making them less obvious to turning motorists.