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A mixed logit analysis of motorists’ right-of-way violation in motorcycle accidents at priority T-junctions.

Pai, Chih-Wei; Hwang, Kevin P; Saleh, Wafaa


Chih-Wei Pai

Kevin P Hwang


Research suggested that motorists’ right-of-way (ROW) violation in automobile–motorcycle gap-acceptance accidents at priority (i.e., stop-/yield-controlled) T-intersections has been a safety concern to motorcyclists. This study examines the characteristics of automobile–motorcycle gap-acceptance accidents that occurred at such locations. British Stats19 accident injury database during 1991–2005 are examined in detail. Automobile–motorcycle gap-acceptance accidents are classified into three crash scenarios: approach-turn, angle crossing, and angle merging crashes. Mixed (random parameters) logit models are estimated to investigate the contributory factors to motorists’ ROW violation in these three crash types. Crash features are also compared among gap-acceptance accidents and other crash scenarios. The methodological approach adopted allows for the individuals within the observations to have different parameter estimates as opposed to a single parameter representing all observations (i.e., accounts for unobserved heterogeneity potentially relating to roadway/environmental characteristics, and motorist behaviours). It was found that motorcycles’ ROW was more likely to be violated on non-built-up roads, and in diminished light conditions, with non-uniform effects across the observations. Elderly/female motorists appeared to be over-represented in gap-acceptance crashes. Implications of the findings are discussed.


Pai, C., Hwang, K. P., & Saleh, W. (2009). A mixed logit analysis of motorists’ right-of-way violation in motorcycle accidents at priority T-junctions. Accident analysis and prevention, 41(3), 565-573.

Journal Article Type Article
Acceptance Date Feb 12, 2009
Online Publication Date Mar 4, 2009
Publication Date 2009
Deposit Date Apr 10, 2014
Print ISSN 0001-4575
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 41
Issue 3
Pages 565-573
Keywords Right-of-way violation; Gap-acceptance accident; Priority T-junction; Mixed logit model;
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