Injury risk in collisions involving buses in Alberta, Canada

Rahman, M, Kattan, L and Tay, R 2011, 'Injury risk in collisions involving buses in Alberta, Canada', Transportation Research Record: Journal of the Transportation Research Board, no. 2265, pp. 13-26.


Document type: Journal Article
Collection: Journal Articles

Title Injury risk in collisions involving buses in Alberta, Canada
Author(s) Rahman, M
Kattan, L
Tay, R
Year 2011
Journal name Transportation Research Record: Journal of the Transportation Research Board
Issue number 2265
Start page 13
End page 26
Total pages 14
Publisher Transportation Research Board of the National Academies TRB
Abstract With 2000 to 2007 crash data, this study investigated the factors that contributed to injuries in collisions that involved at least one bus in the province of Alberta, Canada. Crashes of all types of buses (e.g., school, transit, intercity) were considered. Four logistic regression models were calibrated: single-vehicle collisions on highways, single-vehicle collisions on nonhighway locations, two-vehicle collisions on highways, and two-vehicle collisions on nonhighway locations. The analysis showed that weather conditions were a significant contributing factor in all four types of collisions, although crashes in adverse weather conditions resulted in fewer injuries. The type of collision, characteristics of collision partner, driver age of collision partner, and weather conditions had a significant effect on the level of severity of collisions on both highway and nonhighway locations. Other factors were shown to affect injury risk only in one particular situation. For instance, for highway-related collisions, the age of the collision partner had a significant effect on levels of accident severity, whereas the age of the bus driver did not. In addition, for highway collisions, the severity was higher for head-on crashes, bus-bus crashes, bus-truck crashes, bus-motorcycle crashes, older buses, crashes on grade and in sags, and crashes during dark and sun glare, whereas accident probability decreased with larger outside shoulder width. For nonhighway locations, crashes occurring near tunnels, overpasses, and signalized intersections were shown to result in a higher probability of injury. The results showed that single-bus collisions involving pedestrians at nonhighway locations had higher injury risk than collisions involving objects.
Subject Road Transportation and Freight Services
Keyword(s) Accident probability
Accident severity
Adverse weather
Alberta
Canada
Contributing factor
Crash data
Driver age
Injury risk
Logistic regression models
Signalized intersection
Sun glare
Weather conditions
DOI - identifier 10.3141/2265-02
ISSN 0361-1981
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Citation counts: TR Web of Science Citation Count  Cited 9 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 10 times in Scopus Article | Citations
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