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FHWA Home / Safety / Proven Safety Countermeasures / Proven Safety Countermeasures

Proven Safety Countermeasures | Pedestrian/Bicycles

13. Leading Pedestrian Intervals

Icon representing design improvements on curves.

Leading Pedestrian Intervals

SAFETY BENEFIT

60%
Reduction in pedestrian-vehicle
crashes at intersections

LPIs are beneficial at intersections
Source: pedbikeimages.org/Burden

A leading pedestrian interval (LPI) gives pedestrians the opportunity to enter an intersection 3-7 seconds before vehicles are given a green indication. With this head start, pedestrians can better establish their presence in the crosswalk before vehicles have priority to turn left. LPIs provide the following benefits:

An LPI allows a pedestrian to establish presence in the crosswalk before vehicles are given a green indication.
Source: FHWA

FHWA's Handbook for Designing Roadways for the Aging Population recommends the use of the LPI at intersections with high turningvehicle volumes. Transportation agencies should refer to the Manual on Uniform Traffic Control Devices for guidance on LPI timing. Costs for implementing LPIs are very low, since only signal timing alteration is required. This makes it an easy and inexpensive countermeasure that can be incorporated into pedestrian safety action plans or policies and can become routine agency practice.

Pedestrians wait for the walk signal.
Source: pedbikeimages.org/Burden

Source: Aaron C. Fayish and Frank Gross, "Safety Effectiveness of Leading Pedestrian Intervals Evaluated by a Before–After Study with Comparison Groups," Transportation Research Record 2198 (2010): 15–22. DOI: 10.3141/2198-03

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https://safety.fhwa.dot.gov/provencountermeasures.

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Page last modified on November 2, 2018
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