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 increase the visibility of pedestrians in the intersection and reinforce their right-of-way over turning vehicles. 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.