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Injury risk functions for frontal oblique collisions
Nino Andricevic1, Mirko Junge2, Jonas Krampe3
1a Porsche AG , Stuttgart , Germany.
Traffic Injury Prevention
|March 10, 2018
Summary
Front row occupants face a higher risk of injury in oblique frontal crashes compared to nonoblique ones. This study developed injury risk functions (IRFs) to quantify this increased danger in car accidents.
Area of Science:
- Road safety
- Biomechanics
- Traffic accident analysis
Background:
- Injury risk functions (IRFs) are crucial for understanding occupant safety in vehicle collisions.
- Oblique frontal crashes present unique challenges for vehicle safety systems compared to direct frontal impacts.
Purpose of the Study:
- To construct and compare IRFs for front row occupants in oblique versus nonoblique frontal crashes.
- To quantify the difference in injury risk between these two crash types.
Main Methods:
- Utilized data from the German In-Depth Accident Study (GIDAS) on modern vehicle crashes.
- Developed a logistic injury risk model using objective equivalent speed (oEES) derived from static vehicle deformation.
- Employed binary logistic regression to correlate oEES with injury outcomes (injured or not injured).
Main Results:
- Computed IRFs for Maximum Abbreviated Injury Scale (MAIS) 2+ and 3+ for adults (18-64 years).
- Found a higher probability of injury for belted drivers in oblique crashes compared to nonoblique crashes at equivalent severity levels.
- Identified that a 25% injury risk at MAIS 2+ corresponds to 40 km/h for oblique and 64 km/h for nonoblique frontal crashes.
Conclusions:
- The risk of MAIS 2+ injuries is significantly elevated in oblique frontal crashes.
- The majority of real-world MAIS 2+ injuries occur within an oEES range of 30-60 km/h.
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