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

BACKGROUND

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.

Safety Evaluation of Converting Traffic Signals From Incandescent to Light-Emitting Diodes

Safety Effects of Horizontal Curve and Grade Combinations on Rural Two-Lane Highways (Calculator Tool)

Download Excel Calculator Tool Here (2.10 MB)

This is an .xlsm file which can only be opened using Microsoft® Excel®.

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Highway Safety Information System (HSIS) Award Winners

The Federal Highway Administration (FHWA) hosts the annual Excellence in Highway Safety Data Award Contest to introduce university and community college students to the field of highway safety research. The contest solicits students to use data sourced from the Highway Safety Information System (HSIS) to investigate and develop original research in a topic that advances highway safety.

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