Driver Awareness of Highway Sites With High Skid Accident Potential

Hanscom, Fred R.; United States. Federal Highway Administration. Office of Research; BioTechnology, Inc.

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Driver Awareness of Highway Sites With High Skid Accident Potential

1974-07-01
By Hanscom, Fred R.

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English

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Details:

Creators:

Hanscom, Fred R.
Corporate Creators:

United States. Federal Highway Administration. Office of Research ; BioTechnology, Inc.

United States. Federal Highway Administration. Office of Research ; BioTechnology, Inc. Less -
Subject/TRT Terms:

[+]

Awareness Behavior Bridge Approaches Bridges Bridges And Other Structures Driver Distraction Driver Reaction Drivers Flashing Traffic Signals Hazard Perception Hazards High Risk Locations Highway Curves Highway Design Highways Human Factors In Accidents Ice Pavements Reaction Time Safety And Human Factors Signs Skidding Speed Superelevation Warning Signs Wet Pavements Wet Weather
Publication/ Report Number:

FHWA-RD-74- 66 Final Rpt., HS-021 309, FCP 31H6-012
Resource Type:

Tech Report
Geographical Coverage:

United States
TRIS Online Accession Number:

00130850
Edition:

Final Report (January 1973 - July 1974)
Corporate Publisher:

United States. Federal Highway Administration
Abstract:

This field study examined driver responses to two types of potential highway skidding hazard: wet pavements subjected to high frictional driving demands, and bridges during periods of possible preferential icing. Study objectives were to examine motorists' general awareness of the hazards and to asses the relative effectiveness of various signing treatments which warn of the hazards. Measures of signing effectiveness were motorists' speeds at critical driving locations and questionnaire responses regarding motorists' observations and interpretations of the signs. Three curved highway sections were treated with five experimental signing conditions. Experimental signing conditions incorporating flashing lights were effective at reducing highest quartile mean speeds below the critical safe wet pavement speed based on roadway geometry and surface conditions. Sixty percent of the interviewed motorists saw and properly interpreted the more conspicuous warning signs. Motorists' cues of potential hazard were observed to be: roadewy curvature and superelevation, behavior of other motorists, appearance of pavement surface, ambient conditions, known site accident history, and presence of the warning sign. About one percent of the interviewed motorists cited the warning sign as their cue of potential skidding hazard. Two bridge approaches were signed using combinations of activated and nonactivated signs both at the bridge and in advance of the bridge during periods of possible preferential icing. Significant speed reductions on the bridge and at the bridge entry point were elicited by activated signing. Activated signing used at the bridge was observed to have a greater impact than activated signing used at the advance location.
Format:

PDF
Funding:

DOT-FH-11-7972
Collection(s):

Federal Highway Administration
Main Document Checksum:

[+]

urn:sha256:806d50ab1c331642da5f17666a63afe62a5868dbc995a9357162cf9a6b959268
Download URL:

https://rosap.ntl.bts.gov/view/dot/37882/dot_37882_DS1.pdf
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Driver Awareness of Highway Sites With High Skid Accident Potential

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