Evaluation of the impacts of speed variation on freeway traffic collisions in various traffic States.

Conclusions: Considering the overall traffic as one state could hide important relationships between speed variation and collisions. The impacts of speed variation on collision likelihood are different in various traffic states. The SD and CSV are effective surrogate safety measures for traffic collisions in CT and BQ but may not be good measures in FF and FQ. The AS is an accident determinant in FF and BQ but not a contributing factor in other states. Supplemental materials are available for this article. Go to the publisher's online edition of Traffic Injury Prevention to view the supplemental file.
PMID: 24073775 [PubMed - in process]

Source: Traffic Injury Prevention - October 2, 2013 Category: Occupational Health Authors: Li Z, Wang W, Chen R, Liu P, Xu C Tags: Traffic Inj Prev Source Type: research