TRB Webinar: Open Graded Pavements: A Primer with Emphasis on Water Quality Benefits

September 19, 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 designers are invited to a TRB webinar on Thursday, September 19, 2019, from 2:00 PM to 3:30 PM ET. This webinar will describe open graded pavement designs for highways, including Permeable Friction Course (PFC) overlays. These overlays are thin-lift open-graded pavement sections placed over a conventional highway pavement section that are used to reduce noise, enhance traction during wet weather, and improve visibility. PFCs also have the potential to improve runoff water quality from highways. Presenters will review the properties of PFC that may help improve runoff water quality and review studies about water quality improvement from PFC overlays. They will also demonstrate how PFC may provide effective water mitigation in stormwater programs.

This webinar was organized by the TRB Standing Committees on Asphalt Binders and Stormwater.

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

Webinar Presenters

  • Michael Barrett, University of Texas at Austin
  • Darren Hazlett, University of Texas at Austin

Moderated by: Scott Taylor, Michael Baker International

Webinar Outline

  1. Description of PFC properties and material requirements
  2. Benefits and drawbacks of PFC
    a. Recommended conditions for use
    b. Longevity, maintenance, and costs
  3. Review of PFC water quality studies
  4. Pollutant removal effectiveness
  5. Questions and answers

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:

  • Describe PFC mix design and function
  • Identify water quality benefits of PFC by pollutant of concern
  • Apply PFC for water quality at a transportation agency


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