Leading Pedestrian Intervals vs Mario Andretti’s evil twin
Streetfilms has a feature on Leading Pedestrian Intervals (LPI) for crosswalk signals that I’d recommend watching. In short, before a signal for vehicle traffic turns green, LPIs give pedestrians a head start to establish their presence in the crosswalk. While Streetfilms doesn’t cite safety statistics, virtually all pedestrians can imagine how LPIs might improve their odds. We’ve all likely had the experience of getting a “WALK” signal and stepping out into the crosswalk right as Mario Andretti (or at least his evil twin) takes off from his pole position right as the light turns green as if the green signal releases a massive rubber band holding Mario’s car in place.
The city of Seattle has already started experimenting with LPIs in “a few” locations (Sadly, no mention of where). I stumbled across one on 4th Ave S, just north of Costco and can say that it at least *feels* safer. Going forward, I’ll be interested to see more of these, especially in locations with heavy volumes of turning traffic. Perhaps 4th & Olive, or 6th & University near the I-5 onramp? Where would you like to see an LPI?