LIMITED SIGHT DISTANCE WARNING FOR VERTICAL CURVES

This article summarizes the methodology and findings of a Federal Highway Administration (FHWA) contract study to evaluate highway signs designed to warn motorists of restricted sight distance because of crest vertical curves. Driver awareness, understanding, and response to a new warning sign that was developed were better than for the existing limited sight distance warning sign. However, the new sign's effectiveness still was minimal. As a result of this evaluation and of a previous study conducted by the New York State Department of Transportation, the National Committee on Uniform Traffic Control Devices voted to eliminate the limited sight distance sign (W14-4) from the Manual on Uniform Traffic Control Devices (MUTCD). FHWA plans to issue a Final Rule to delete this sign from the MUTCD.

Availability:
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Corporate Authors:
Federal Highway Administration

Office of Research and Development, 1200 New Jersey Avenue, SE
Washington, DC United States 20590
Authors:
- Freedman, M
- Staplin, L K
- Decina, L E
Publication Date: 1985-9

Media Info

Features: Figures; References; Tables;
Pagination: p. 46-53
Serial:
- Public Roads
- Volume: 49
- Issue Number: 2
- Publisher: Federal Highway Administration
- ISSN: 0033-3735
- Serial URL: https://www.fhwa.dot.gov/publications/publicroads/
Publication flags:
Open Access (libre)

Subject/Index Terms

TRT Terms: Awareness; Curves (Geometry); Drivers; Knowledge; Measures of effectiveness; Reaction time; Sight distance; Traffic signs; Warning signs
Uncontrolled Terms: Driver reaction; Effectiveness; Vertical curvature
Subject Areas: Highways; Operations and Traffic Management; I73: Traffic Control;

Filing Info

Accession Number: 00453265
Record Type: Publication
Source Agency: National Highway Traffic Safety Administration
Report/Paper Numbers: HS-039 378
Files: HSL, TRIS, USDOT
Created Date: Feb 28 1986 12:00AM