Retiming lights in NYC to improve pedestrian safety

NYCDOT has recently released this short video clip (no sound) which shows how lights have been retimed to enhance pedestrian safety. A practice known as Leading Pedestrian Intervals (LPIs) gives those on foot the chance to start crossing before cars get a green light. The idea is that it improves safety by making it clear to drivers that they must give way to the pedestrians before making turns across the crosswalk.