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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

Freeway Speeds and Speed Variations Preceding Crashes, Within and Across Lanes

Publication Information

Publication Type:
Other
Abstract:

Relationships between speed choice and crash occurrence have been difficult to identify. This work examines vehicle speeds (and their variations) derived from single loops for several Southern California freeways, within and across freeway lanes, together with corresponding crash data. While a variety of factors clearly influence speed and speed variance, there is no evidence in or across these crash data sets and observations of their corresponding series of 30-second traffic conditions that speeds or their variation trigger crashes.

Publishing Date:
January 2004
FHWA Program(s):
Research
Safety
AMRP Program(s):
Safety Data and Analysis
FHWA Activities:
Highway Safety Information System
Subject Area:
Safety and Human Factors