01473119

Component

Numerous studies both in North America and abroad have studied the roundabout as a means to improve the capacity and safety of intersections. The focus of these studies has been to reduce both the number and the severity of accidents, and have generally come to agreeable results. Nevertheless, few studies have dealt with the identification of accident factors within roundabouts. The varied physical and environmental characteristics of Quebec’s roundabouts and the behavioral traits of its drivers requires further study in order to help reduce the occurrence and severity of accidents. This paper presents a crash severity analysis to identify the effects of different contributing factors on injury severity outcomes. To achieve this, an ordered logit modeling technique was used for the analysis. Moreover, an important effort was made to integrate an accident database containing accident records from the year 2000 to 2011. Among other results, it was found that factors such as a larger number of involved vehicles, accidents occurring within the intersection, vehicle rollovers, the involvement of buses, accidents occurring in the dark on unlit roads and snow conditions led to increased injury severity within roundabouts, whereas factors associated to accidents involving only cars, animal strikes and snow-covered roadways were found to reduce the likelihood of severe injuries.

This paper was sponsored by TRB committee ANB75 Roundabouts.

01470560

13-4527

English

14p

2013

Transportation Research Board 92nd Annual Meeting

Digital/other

Figures; Maps; References; Tables

Crash records; Crash severity; Databases; Injuries; Intersections; Roundabouts

Quebec, Canada

Highways; Safety and Human Factors; I81: Accident Statistics

Transportation Research Board Annual Meeting 2013 Paper #13-4527

TRIS, TRB, ATRI

Feb 5 2013 12:52PM