Use appropriate traffic control markings and measures to encourage driver comfort and proper use of reversible lanes at signalized intersections.

Turner-Fairbank Highway Research Center conducted two experiments in a highway driving simulator to evaluate driver behavior and sign comprehension during reversible-lane operations compared to conventional-lane operations.

Nationwide; United States

Background (Show)

Lesson Learned

Performance data collected during the simulated drives and self-reported questionnaire responses were used to evaluate driver behavior and comprehension of the reversible lane designs and associated signs. Results showed that drivers used both versions of the reversible left-turn lane safely and with frequency high enough to potentially improve throughput during periods of high traffic volume.

The following traffic control measures including signs and symbols were used in this study to encourage driver comfort and proper use of reversible lanes:
  • Posting advance guide signs describing reversible-lane operations upstream of an intersection.
  • Altering stop bars (e.g., raising, embedding, or milling the footprint) to make them visible only to non-reversible traffic.
  • Installing low-profile raised curbs or flexible delineator posts along reversible lane markings to discourage lane changes.

Lesson Comments

No comments posted to date

Comment on this Lesson

To comment on this lesson, fill in the information below and click on submit. An asterisk (*) indicates a required field. Your name and email address, if provided, will not be posted, but are to contact you, if needed to clarify your comments.


Simulator Assessment of Alternative Lane Grouping At Signalized Intersections

Published By: U.S. DOT Federal Highway Administration

Source Date: 07/01/2019

Other Reference Number: FHWA-HRT-19-034

URL: https://rosap.ntl.bts.gov/view/dot/42421

Lesson Contacts

Lesson Analyst:

Paige Cassell


Average User Rating

1 (9 ratings)

Rate this Lesson

(click stars to rate)

Lesson ID: 2019-00907