_Agenda_Packet_092826 - Laserfiche WebLink

34 Leading Pedestrian Interval (LPI) The Leading Pedestrian Interval initiates the pedestrian WALK indication three to seven seconds before motor vehicles traveling in the same direction are given the green indication. This signal timing technique allows pedestrians to enter the intersection prior to turning vehicles, increasing visibility between all modes. Guidance • The LPI should be used at intersections with high volumes of pedestrians and conflicting turning vehicles and at locations with a large population of elderly or school children who tend to walk slower. • Where a Leading Pedestrian Interval is implemented on an approach with protected left turns that would otherwise run concurrently at the start of the pedestrian walk interval, consideration should be given to using a lagging protected left-turn phase so the pedestrian head start is not undermined by turning vehicle movements. Considerations • Intersection geometry and traffic controls should encourage turning vehicles to yield the right-of-way to pedestrians. Traffic movements should be analyzed at intersections in order to utilize non-conflicting phases to implement one or more WALK intervals per cycle. • Signal design should also minimize the time that pedestrians must wait. Requiring pedestrians to wait for extended periods can encourage crossing against the signal. The 2010 Highway Capacity Manual states that pedestrians have an increased likelihood of risk-taking behavior (crossing against the signal) after waiting longer than 30 seconds. • Free-flowing right-turn lanes are discouraged at signalized intersections. Where they are present and unsignalized, the pedestrian signal and pushbutton should be located on the channelization (“pork chop”) island. A yield or crosswalk warning sign should then be placed in advance of the crosswalk. • LPI gives pedestrians a head start, but if the walk crosses a dual right turn, pedestrians can still be exposed when both turn lanes begin moving.Drivers are accustomed to turning on green immediately; a short LPI may not be enough unless the signal display and intersection operations are very clear.