Exploring motorcyclist injury severity resulting from various crash configurations at T-junctions in the United Kingdom - An application of the ordered probit models

Chih Wei Pai, Wafaa Saleh

Research output: Contribution to journalArticle

28 Citations (Scopus)


Objectives. The fact that motorcycle users tend to be more vulnerable to injuries than those using other motorized vehicles may act synergistically with the complexity of conflicting movements between vehicles and motorcycles to increase injury severity in a junction-type accident. A junction-type collision tends to be more severe than a non-junction case due to the fact that some of the injurious crashes such as angle-collision commonly occur. Existing studies have applied several statistical modeling techniques to examine influential factors on the occurrences of different crashes among motorized vehicles but surprisingly very little has empirically explored whether a particular crash type, resulting from a junction-type accident, is more injurious to motorcyclists. This article attempts to investigate whether a particular collision is more deadly to motorcyclists conditioned on crash occurrence at T-junctions in the U.K., while controlling for environment, vehicle, and demographic factors. Methods. The statistical modeling technique employed is the ordered probit models using the data extracted from the STATS19 accident injury database (1999-2004). Results. The modeling found determinants of injury severity among motorcyclists at T-junctions in the U.K. For example, an approach-turn/head-on collision is much more injurious to motorcyclists; and, those riding in early morning (i.e., 0000-0659) are more likely to be severely injured. Conclusions. This study offers a guideline for future research, as well as insight into potential prevention strategies that might help moderate motorcyclist injuries.

Original languageEnglish
Pages (from-to)62-68
Number of pages7
JournalTraffic Injury Prevention
Issue number1
Publication statusPublished - Mar 2007
Externally publishedYes



  • Crash Configuration
  • Motorcyclist Injury Severity at T-Junction
  • Ordered Probit Model

ASJC Scopus subject areas

  • Pathology and Forensic Medicine
  • Public Health, Environmental and Occupational Health

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