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LPI – Leading Pedestrian Interval

Leading Pedestrian Intervals (or LPIs) are a traffic signalization strategy that allows pedestrians an exclusive 3 to 5 second signal (in some cases much longer) to begin crossing the street before cars get a green light. Consequently, they are also known by their sassier nickname, Pedestrian Head Start. But in my view the best variation on what LPI stands for comes from Christine Berthet of the Hells Kitchen Neighborhood Association who proposes: "Life Preserving Interval"