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Comparison of mid-block and intersection-related left turn collisions
Bahman Roudsari1, Robert Kaufman, Raminder Nirula
1University of Texas School of Public Health, Dallas Regional Campus, 5323 Harry Hines, Dallas, TX 75390, USA. bahman.roudsari@utsouthwestern.edu
Traffic Injury Prevention
|November 13, 2007
Summary
Mid-block left turn crashes increase front seat passenger injury severity compared to intersection crashes. Vehicle size did not impact driver or passenger injury severity in these left-turn collisions.
Area of Science:
- Traffic Safety Research
- Automotive Engineering
- Injury Biomechanics
Background:
- Left turn maneuvers are common but inherently risky.
- Understanding factors influencing occupant injury severity is crucial for safety improvements.
Purpose of the Study:
- To investigate factors influencing occupant injury severity during left turn crashes.
- To compare injury outcomes between intersection and mid-block left turn collisions.
Main Methods:
- Utilized the National Automotive Sampling System Crashworthiness Data System (1995-2005).
- Compared crash characteristics and injury severity between intersection and mid-block left turn collisions.
- Adjusted for potential confounding variables in the analysis.
Main Results:
- Front seat passengers had 72% higher odds of severe injury (ISS > or =9) in mid-block collisions versus intersection collisions.
- Driver injury severity was not significantly associated with crash location (intersection vs. mid-block).
- Vehicle size (SUVs, minivans vs. sedans) did not correlate with reduced injury severity for occupants.
Conclusions:
- Mid-block left turn crashes pose a greater risk of severe injury to front seat passengers compared to intersection left turns.
- Vehicle size is not a significant factor in mitigating injury severity for occupants in left-turn crashes.
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