Events / Meetings

Traffic Signal Change and Clearance Interval PFS Mid-stage Research Update

When: September 5, 2024 | 3:00 - 4:30 PM ET

This webinar is brought to you by ITE with support from the Traffic Signal Change and Clearance Interval Transportation Pooled Fund Study.

Webinar Description:

This webinar presents a mid-stage research update for the Traffic Signal Change and Clearance Interval Pooled Fund Study (PFS) Phase 2, led by the Federal Highway Administration (FHWA). Phase 2 of the PFS seeks to improve the understanding of key factors to implement traffic signal change and clearance intervals (CCIs) and assess CCI safety and operational impacts. The PFS sponsored a Phase 1 study to synthesize the knowledge on traffic signal CCIs, identify research gaps, develop a research plan, and evaluate potential data collection alternatives. The Phase 2 study uses the Phase 1 synthesis report as a foundation but conducts additional review to identify potential gaps and synergies the Phase 1 report might have overlooked.

This webinar presents a mid-stage research update on the collection and analysis of connected vehicle data, LiDAR data, video data, and historical crash data. The researchers leading these four investigations will summarize outcomes from the pilot data collection and analysis (April thru July 2024) and describe plans for the full data collection and analysis (through at least February 2025 if not longer). The research team will also invite audience questions and feedback as the team finalizes its full data collection and analysis plan. Once complete, this data collection and analysis effort will support a subsequent effort to develop a new methodology for determining CCI durations in 2025.

Learning Objectives:

  • Describe the Traffic Signal Change and Clearance Interval Pooled Fund project (e.g., objectives, schedule, deliverables).
  • Recognize key research questions to address in this project (e.g., driver behaviors for making stop-go decisions, driver behaviors for turning vehicles at the onset of a yellow signal and underlying assumptions for the extended kinematic equation, impacts of long yellow interval times on driver behavior and intersection operations).
  • Understand preliminary data analysis plans in this project (e.g., safety risk function, probability of stopping curves, change in safety and mobility measures associated with changes to CCI durations).
  • Recall challenges of the research work plan (e.g., data types to address key research questions; data collection methods, sites, and schedule/budget constraints).

Presenters:

  • David Hale, Project Manager | Leidos, Inc. | McLean, VA, USA
  • Burak Cesme, Associate | Kittelson and Associates | Washington, DC, USA
  • Anuj Sharma, Professor | Iowa State University | Ames, IA, USA
  • Taylor Li, Associate Professor | University of Texas at Arlington | Arlington, TX, USA
  • Norris Novat, ITS Research Engineer | Leidos, Inc. | McLean, VA, USA

Fees:
ITE Members: Free
Non-Members: Free

Registration for webinar includes the live event, an archived recording with access for 30 days to each registrant. If you are a non-member of ITE you will need to create an account to register. You can create an account here.

PDH Credit Certificate: If you would like PDH Credit for this webinar, there is a processing fee for each registrant of $20 regardless of membership status to receive 1.5 PDH credits certificate. Instructions and link will be provided at the conclusion of the live event. Participants are able to purchase and retrieve their certificate until their access to the content expires. After the content expires and goes into archive, the certificate opportunity is forfeit.