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                Freeway Speeds and Speed Variations Preceding Crashes, Within and Across Lanes
Publication Information
              Publication External Link:Freeway Speeds and Speed Variations Preceding Crashes, Within and Across Lanes
              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 U.S. DEPARTMENT OF TRANSPORTATION

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