https://www.ce.utexas.edu/prof/kockelman/public_html/AAPSubmission--InjurySeverity.pdf

Driver injury severity: an application of ordered probit models.

The relationship between speed and road safety is a highly controversial and emotionally charged subject This report investigates the effects of changes in speed on the number of road accidents or road accident victims It is found that the relationship between speed and accidents or accident victims can be represented by a set of power functions, as postulated in the so called "Power Model" of the relationship between speed and road safety

/pdf/speed-and-road-accidents-an-evaluation-of-the-power-model-26qasuqhh0.pdf

Speed and road accidents : an evaluation of the power model

A review of risk factors and patterns of motorcycle injuries

A review of the effect of traffic and weather characteristics on road safety.

Linear and nonlinear multivariate statistical analyses are applied to determine how the types of accidents that occur on heavily used freeways in Southern California are related both to the flow of traffic and to weather and ambient lighting conditions. Traffic flow is measured in terms of time series of 30-second observations from inductive loop detectors in the vicinity of the accident prior to the time of its occurrence. Results indicate that the type of collision is strongly related to median traffic speed and to temporal variations in speed in the left and interior lanes. Hit-object collisions and collisions involving multiple vehicles that are associated with lane change maneuvers are more likely to occur on wet roads, while rear-end collisions are more likely to occur on dry roads during daylight. Controlling for weather and lighting conditions, there is evidence that accident severity is influenced more by volume than by speed.

A. H. Rhodes

Papers

Speed, speed limits and road traffic accidents under free flow conditions.