Home > Car Culture > Leading Pedestrian Intervals vs Mario Andretti’s evil twin

Leading Pedestrian Intervals vs Mario Andretti’s evil twin

February 25, 2013 Leave a comment Go to comments

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?

  1. Matt
    February 25, 2013 at 12:29 pm

    I would like to see LPI’s *anywhere* in downtown Bellevue, and most especially at the intersection of Bellevue Way and NE 8th St.

  2. nbarnard
    February 26, 2013 at 12:44 pm

    We already have these in Seattle. I start walking after the light has turned yellow and the traffic has stopped.

  3. Bubba Mike
    July 21, 2013 at 4:16 pm

    While it seems safer people will walk on the don’t walk sign as well. I’m not sure that it will make a difference.

  4. Kathy
    December 3, 2013 at 11:31 pm

    I would like to see the crosswalk across California Ave SW at Lander Street SW have an LPI or better, a separate walk signal cycle. Lafayette Elementary School and Hiawatha Park are on that intersection and many children use those crosswalks. About a month ago a driver turning left from Lander onto southbound California Avenue hit a child who was legally using the crosswalk. Fortunately the child was not seriously hurt. There have been other near misses with pedestrians at this intersection. I spent 2 months in Quincy, Illinois this fall and I thought their intersections were very well designed. Almost all of them did not allow cars to turn left until pedestrians had crossed. I wrote to SDOT and suggested this solution for the California/Lander intersection.

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