01006620

Component

http://dx.doi.org/10.3141/1908-08

This paper presents a study evaluating the power model of the relationship between speed and road safety. The power model states that a given relative change in the mean speed of traffic is associated with a relative change in the number of accidents or accident victims by means of a power function. An extensive review of relevant literature has been made, and evidence from 98 studies containing 460 estimates of the relationship between changes in speed and changes in the number of accidents or accident victims has been synthesized by means of meta-analysis. The results are broadly supportive of the power model. It is concluded that speed has a major impact on the number of accidents and the severity of injuries and that the relationship between speed and road safety is causal, not just statistical.

01006617

English

pp 59-69

2005

Transportation Research Record: Journal of the Transportation Research Board

0309093805

Print

Figures (1) ; References (16) ; Tables (6)

Highway safety; Injury severity; Literature reviews; Meta-analysis; Speed; Traffic accident victims; Traffic accidents

Causal relationships

Data and Information Technology; Highways; Safety and Human Factors; I80: Accident Studies

TRIS, TRB, ATRI

Oct 28 2005 4:14PM

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