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Leading Pedestrian Intervals and Addressing the Impact on Safety

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The live event has ended. Recording now available to view on-demand.

This webinar is led by ITE Traffic Engineering Council.

To learn how to register and see more information about the webinar including PDH credit certificate fees, please view the webinar course page here.

Webinar Description:

Pedestrian fatalities in the United States increased from just over 4,000 per year in 2009 to over 7,300 per year in 2021 and 2022 - the highest levels since 1982. About of quarter of these fatalities occur at intersections. One safety counter-measure for vehicle-pedestrian crashes that has become popular is Leading Pedestrian Intervals (LPIs).

A leading pedestrian interval, or pedestrian head start, is typically described as a 3-7 seconds of advance time for pedestrians to begin walking before traffic can begin moving, so that the pedestrians become more visible to conflicting turning movements. The application showed promise in a 2002 study in Las Vegas. Over the past 20 years, leading pedestrian intervals have been gaining popularity as a pedestrian safety enhancement.

This webinar will explore the latest research in the effectiveness of LPI as a safety counter-measure, and will feature the results of an October 2018 FHWA study, which has demonstrated that LPIs can be expected to reduce vehicle-pedestrian crashes by 13 percent.

Learning Objectives:

  • Discuss the expected effectiveness of LPIs
  • Employ guidance on the best implementation strategies for LPIs
  • Examine how widespread the use of LPIs are
  • Distinguish the appropriate timing for LPIs

The webinar recording will be made available on-demand it will have a shelf life of 60 days to register before it is archived. Participants are able to purchase and retrieve their PDH credit certificate until their access to the content expires. After the content expires and goes into archive, the PDH credit certificate opportunity is forfeited.


  • Moderator: Adam Allen, National Discipline Leader | Highways & Traffic Engineering | Colliers Engineering & Design | Hamilton, NJ, United States

    Adam Allen, P.E., PTOE has 20 years of traffic and transportation experience. He is National Discipline Leader for Highways & Traffic Engineering for Colliers. He served as President of the ITE Metropolitan Section of New York and New Jersey in 2013 and President of the ITE Northeast District in 2021. He is a past chair of LeadershipITE. Adam was the 2018 ITE International Young Member of the Year.

  • Elissa Goughnour, Principal / Federal Market Lead, MetroDC | VHB | Tysons Corner, VA, United States

    Elissa Goughnour was the lead author of FHWA HRT-18-044 "Safety Evaluation of Protected Left-Turn Phasing and Leading Pedestrian Intervals on Pedestrian Safety". Ms. Goughnour has a B.S. from Gettysburg College and MS in Civil, Environmental and Infrastructure Engineering from George Mason University. Ms. Goughnour has over 20 years of experience in transportation safety, with a focus on active transportation, and is a Principal with VHB.

  • Emily Dalphy, Project Manager, Vision Zero Projects | City of Toronto | Toronto, Ontario, Canada

    Emily Dalphy is a Project Manager in the City of Toronto’s Vision Zero Projects unit. In this role, she focuses on both design & implementation of geometric safety improvement projects and policy development. Most recently, Emily led the development of the City’s Council-approved 2023 Traffic Calming Policy and the Division’s LPI + LBI Policy. Emily is a graduate of Purdue University and, prior to returning to Canada and joining the City of Toronto, worked for 14 years in Washington, DC and Richmond, VA in various transportation safety & Vision Zero roles.

  • Zhibo Zhang, Ph.D., P.E., PTOE, Supervisory Civil Engineer, Traffic Engineering and Safety Division (TESD) | District Department of Transportation (DDOT) | Washington, D.C., United States

    Zhibo Zhang is currently a Supervisory Civil Engineer overseeing the Traffic Engineering team under the Traffic Engineering and Safety Division (TESD) at the District Department of Transportation (DDOT). His primary duties include overseeing the Citywide Traffic Signal Optimization program, and reviewing various types of traffic engineering studies and traffic modeling, including corridor planning studies, bus and bicycle facility traffic analyses, transit signal priority, and Comprehensive Transportation Review studies. Before joining DDOT, Dr. Zhang had six years of experience working in the private sector in the DMV area. Dr. Zhang holds a PhD degree from Purdue University with a concentration in Transportation Engineering, and Bachelor of Science degree in Civil Engineering from Tsinghua University, Beijing, China.

  • Brandon Song, P.E., Traffic Engineer | Mead & Hunt | Washington D.C., United States

    Brandon Song is a traffic engineer with Mead & Hunt's Washington DC office. He has over five years of experience in modeling and simulation, signal timing optimization, Vision Zero design, traffic analysis, and application of the MUTCD and ITE guidelines and standards. For most of his career, Brandon has supported DDOT projects and traffic studies such as the Citywide Signal Optimization Project, neighborhood Traffic Safety Investigation (TSI) program, and corridor multimodal design projects. He is always looking to get into the field to observe issues first-hand and is passionate about developing signal timing, traffic engineering, and safety countermeasures for DC residents.

April 4, 2024
Thu 3:00 PM EDT

Duration 1H 30M

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