United States Department of Transportation
i
Indoor Simulator Study and Field Study Evaluation of Sequential Flashing Chevron Signs on Two-lane Rural Highways - Technical Brief
-
2018-09-01
[PDF-1.44 MB]
Details:
-
Corporate Creators:
-
Contributors:
-
Subject/TRT Terms:
-
Publication/ Report Number:
-
Resource Type:
-
Geographical Coverage:
-
Corporate Publisher:
-
Abstract:The Federal Highway Administration (FHWA) recently published Low-cost Treatments for Horizontal Curve Safety 2016, which offers guidance concerning the safety effects of various countermeasures intended to mitigate roadway departure crashes along horizontal curves.1 One sign application with potential safety improvements along horizontal curves on two-lane rural highways was the Sequential Dynamic Curve Warning System (SDCWS). The SDCWS is a series of horizontal curve chevron signs with solar-powered flashing lights embedded in the signs. The flashing lights can be simultaneous or a sequence of lights moving toward or away from the driver. In the sequential mode, each sign begins flashing at a time that is offset relative to the adjacent sign, producing a sequential flashing effect. An example SDCWS application is shown in Figure 1. The purpose of this study was to identify effective flash rates, speed-activation thresholds, and flashing sequences when deploying SDCWS along horizontal curves on two-lane rural highways.
-
Format:
-
Collection(s):
-
Main Document Checksum:
-
Download URL:
-
File Type:
