TRB Webinar: How Rough is Your Pavement? Measuring Pavement Profiles for Low-Speed Roads

March 22, 2022 02:00 PM - 03:30 PM U.S. Eastern
Cost (for your seat)
Professional Development Hours for this webinar
1.50 hour(s)
Continuing Education Hours for this webinar
AAE: 0.00 hour(s)
AICP: 0.00 hour(s)
CLE: 0.00 hour(s)

Pavement smoothness (or roughness) is used by state highway agencies for monitoring network condition as well as assessing construction quality and optimizing investments in preservation, rehabilitation, and reconstruction. States are also required to report the International Roughness Index (IRI) as an element of the federal Highway Performance Monitoring System. TRB will host a webinar on Tuesday, March 22, 2022 from 2:00-3:30 PM Eastern that will cover current practices for estimating roughness of low-speed and urban roads as well as the challenges associated with collecting data. Presenters will review the calculations for determining IRI. They will cover the unique features of low-speed and urban roads that may yield inappropriate and misleading data. Presenters will offer both a short-term and long-term solution.

This webinar is sponsored by the TRB Standing Technical Committee on Pavement Surface Properties and Vehicle Interaction.

Registration is free for employees of TRB sponsors as well as Titanium and Cobalt Global Affiliates. The registration rate for all other attendees is $100. Sign into to view registration information. Contact Patrice Davenport to inquire about becoming a TRB sponsor or global affiliate organization.

Webinar agenda and presenters

  1. Introduction to the issues: Steve Karamihas, University of Michigan Transportation Research Institute
  2. Reducing errors at stops with error suppression algorithms: Robert Orthmeyer, Federal Highway Administration
  3. Eliminating measurement errors at low speed, stops, and during grading with sensor augmentation: Brian Schleppi, Ohio Department of Transportation (retired)
  4. Question and answer session: LaDonna Rowden, Illinois Department of Transportation


The first 60 minutes of the webinar will be for presentations and the final 30 minutes will be reserved for audience questions.

Learning Objectives

At the end of this webinar, participants will be able to:

  1. Define urban profile measurements
  2. Identify where errors can occur in urban profile measurements
  3. Identify errors and methods to minimize errors of stop-and-go and equipment improvement

Professional Development Hour Information

Professional engineers (PEs) who register and attend the entire webinar as an individual will be awarded 1.5 Professional Development Hours (PDHs). TRB’s webinar program awards PDH credits only to the registered individual, and not to other members of a group that view the webinar together. To be eligible for the credits, individuals must remain signed in for the entire webinar, including for any question and answer session following the presentations.

Please check with your licensing board to ensure that TRB webinar PDHs are approved by your board.

TRB will report credits earned to the Registered Continuing Education Program (RCEP). Complaints about registered providers may be sent to RCEP, 1015 15th Street, NW, 8th Floor, Washington, D.C., 20005.

Pre-registration is required. Once the webinar starts, you will be unable to register. Individuals that are registered for a webinar but do not receive their confirmation emails due to their organization’s internal firewalls should contact the TRB Helpdesk for assistance in signing in.

View our FAQ page for more information.

Registration questions? Contact TRB webinar program.