TRB Webinar: Inertial Profiler Certification for the International Roughness Index

October 28, 2019 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 engineers are invited to a TRB webinar on Monday, October 28, 2019, from 2:00 PM to 3:30 PM ET. The webinar will discuss the current state of practice for inertial profiler certification. Presenters will identify the findings from the National Cooperative Highway Research Program (NCHRP)’s Synthesis 526: Inertial Profiler Certification for Evaluation of International Roughness Index. Inertial profilers collect repeatable and reproducible road profiles that are then analyzed to calculate a ride quality index, most commonly the International Roughness Index (IRI). The IRI is the performance measure that state departments of transportation must report to the Federal Highway Administration (FHWA) as a part of the Highway Performance Monitoring System (HPMS) and Moving Ahead for Progress in the 21st Century Act (MAP-21) requirements. The presenters will also discuss certification test procedures, criteria, facilities and programs.

This webinar was organized by the TRB Standing Committee on Pavement Surface Properties and Vehicle Interaction.

Some registrants will need to pay $95 to attend this webinar.  Sign into to view registration information.

Webinar Presenters

  • Rohan Perera, SME
  • Robert Orthmeyer, Federal Highway Administration
  • John Donahue, Missouri Department of Transportation

Moderated by: Magdy Mikhail, Texas Department of Transportation

Webinar Outline

  1. Why certification is necessary for inertial profilers
  2. Reference devices and reference profilers
  3. Test procedures and certification criteria
  4. Discuss certification facilities
  5. Examples of certification programs
  6. Question and answer session

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. Discuss how to develop a certification program, including the facility and procedures for inertial profiler

Professional Development Hour Information

A certificate for 1.5 Professional Development Hours (PDHs) will be provided to Professional Engineers (PEs) who register and attend the webinar as an individual. For approved webinars, TRB’s webinar program awards Registered Continuing Education Provider (RCEP) Professional Development Hour (PDH) credits associated with participation only to the registered individual and not to other members of a group that view the webinar together. To receive PDH credits, please register as an individual and sign into the webinar from your personal computer. After doing this, you may join your group in a meeting room.  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.

In addition, advance registration is available until just before the webinar starts. Once the webinar starts, you will be unable to submit your registration. 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.

Individuals registered as Florida PEs are no longer required to email TRB with your license number to report your attendance. Instead, please use your certificate that TRB provides through as verification of your attendance to the Florida Board of Professional Engineers.

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

This webinar was developed in March 2019. TRB has met the standards and requirements of the Registered Continuing Education Program (RCEP). Credit earned on completion of this program will be reported to RCEP by TRB. Complaints about registered providers may be sent to RCEP, 1015 15th Street, NW, 8th Floor, Washington, DC 20005. Website:

Registration questions? Contact Reggie Gillum at