Events / Meetings

Traffic in 2023: Nationwide Arterial Demand and Performance Trends Through the Lens of Virtual SPMs

When: Wednesday, September 20, 2023 | 2:00 - 3:30 PM ET

This webinar is part of the Industry Council Product Showcase and is hosted by Industry Council member, INRIX.

Webinar Description:

The Federal Highway Administration defines automated traffic signal performance measures (ATSPM) as “a collection of data analytics tools and approaches that automatically collect and convert high-resolution traffic controller data into actionable performance measures.” While undoubtedly powerful and aid professionals by enabling a shift from reactive to proactive management, ATSPMs require significant equipment upgrades and additional detection to gain full benefits.

As an extension and complement to ATSPMs, ‘virtual’ SPMs approach signal analysis by analyzing the quality of flow of vehicles through intersections, for any/all movements, without the need for ANY new infrastructure investments. In 2021, INRIX published the first comprehensive nationwide assessment of traffic signal performance via virtual SPMs, the INRIX U.S. Signals Scorecard. The Signal Scorecard has been updated twice, most recently in the spring of 2023 based upon nearly 5 billion samples across more than 240,000 intersections across different seasons of 2022.

Building upon the 2022 U.S. Signals Scorecard, this session will leverage data from the first half of 2023 to provide an updated analysis on traffic signal demand and performance for more than 260,000 US intersections. Data from 7 straight quarters and 8 quarters overall since late 2020 provide unprecedented insights and are now allowing year-over-year trending.

Learning Objectives:

  • Understand key ‘Virtual’ Signal Performance Measures (SPMs), and how they compare and contrast with infrastructure-based SPMs
  • Learn how connected vehicle data can be used to assess national and regional results and trends for traffic volume, and the key SPMs of delay/vehicle, arrival on green and split failures
  • Discuss the benefits and drawbacks of sampling approach to SPMs using connected vehicles
  • Review how traffic demand has changed post-Covid and discuss if we have reached the ‘new normal’ for traffic volume patterns
  • Explain how networkwide data can be used to screen for anomalies to aid in reducing unnecessary intersection delay


  • Rick Schuman, Senior Fellow | INRIX
  • Shaun Quayle, Senor Traffic Engineer | INRIX

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.