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U.S. Department of Transportation U.S. Department of Transportation Icon United States Department of Transportation United States Department of Transportation
OFFICE OF RESEARCH, DEVELOPMENT, AND TECHNOLOGY AT THE TURNER-FAIRBANK HIGHWAY RESEARCH CENTER

Safety Evaluation of Discontinuing Late-Night Flash Operations At Signalized Intersections

FHWA-HRT-13-069.pdf (386.17 KB)

Publication Information

Publication Type:
Summary Report
Publication Number:
FHWA-HRT-13-069
Abstract:

During late-night flash (LNF) mode (from late night to early morning hours), traffic signals flash yellow for one road (typically, the major road), requiring caution but no stopping, and flash red for the other road (typically, the minor road), requiring drivers to stop and then proceed through the intersection after yielding to the traffic on the major road. The intent of LNF is to reduce energy consumption and delay during periods of low traffic demand. However, in recent years, many agencies have begun replacing LNF with normal phasing operation because of safety concerns.

Publishing Date:
August 2013
Author(s):
Srinivasan, Raghavan
Publishing Office:
Office of Safety Research and Development
FHWA Program(s):
Safety
Research
AMRP Program(s):
Safety Data and Analysis
FHWA Activities:
Highway Safety Information System
Subject Area:
Safety and Human Factors