TRB Webinar: Understanding Polydrug Use and Its Role in Drug-Impaired Driving

July 01, 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)

TRB will conduct a webinar on Monday, July 1, 2019, from 2:00 PM to 3:30 PM ET that examines the role polydrug use – the concurrent use of multiple drugs – may play in drug-impaired driving. Polydrug use includes illicit drug use, the intentional misuse of prescription drugs, or the concurrent use of multiple drugs for therapeutic use.  More research into how different drug combinations affect driving is currently underway.

This webinar will discuss recent findings on polydrug use in the general population and among drivers arrested for driving under the influence. The presenters will discuss steps law enforcement is taking to identify polydrug use through the drug evaluation and classification program. They will also describe developments in roadside oral fluid testing that may allow for early detection of drug-impaired driving.

This webinar was organized by the TRB Standing Committee on Alcohol, Other Drugs, and Transportation.

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

Webinar Presenters:

  • Ron Flegel, Substance Abuse and Mental Health Services Administration
  • Jennifer Harmon, Orange County Crime Lab
  • Chuck Hayes, International Association of Chiefs of Police

Moderated by: Jana Price, U.S. National Transportation Safety Board

Webinar Outline

  1. National polydrug use trends
  2. Drug use and polydrug use among drivers involved in traffic-safety-related events
  3. The drug evaluation and classification program approach to identifying polydrug impairment
  4. 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:

  • Discuss the different ways that drugs may interact to impair driving performance
  • Describe national drug use trends, including polydrug use
  • Determine how standard toxicological practices in many jurisdictions may underestimate the number and types of drugs used by impaired drivers
  • Identify how law enforcement officers may assess drug use through the drug evaluation and classification system or through oral fluid testing

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