TRB Webinar: Improved Analysis of Two-Lane Highway Capacity and Operational Performance

March 25, 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, March 25, 2019 from 2:00 PM to 3:30 PM ET that features research from the National Cooperative Highway Research Program (NCHRP)’s Web-Only Document 255: Improved Analysis of Two-Lane Highway Capacity and Operational Performance.

This webinar will describe the development of a new two-lane highway analysis methodology that introduce features that supplement and replace several aspects of the existing two-lane highway analysis methodology in the Highway Capacity Manual (HCM). Two-lane highways account for a significant portion of the national highway system, and two-lane highways in previously less developed areas are experiencing increases in traffic demand.  Presenters will discuss improved methodologies to model two-lane highways. They will identify microsimulation tools and explore possible changes to the HCM.

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

Webinar Presenters

  • Scott Washburn, University of Florida
  • Ahmed Al-Kaisy, Montana State University

Moderated by: Amirhossein Jafari, Montana State University

Webinar Outline

1. Problem statement
2. Objectives
3. Field data 
4. Simulation
5. Analysis methodology concepts
6. Analysis methodology steps (overview)
7. Software implementation
8. HCM adoption status
9. Summary
10. 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:

  • Describe the limitations of current HCM two-lane highway analysis methodology
  • Describe concepts of new methodology
  • Apply new methodology

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 October 2018. 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