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Fleet study evaluation of an advance brake warning system
1Department of Industrial Engineering and Management, Ben Gurion University of the Negev, Beer Sheva, Israel. shinar@bgumail.bgu.ac.il
Human Factors
|January 2, 2001
Summary
The advance brake warning system (ABWS) did not significantly reduce rear-end collisions in a fleet study. Further validation of new vehicle safety technologies is recommended before widespread adoption.
Area of Science:
- Road safety
- Automotive engineering
- Traffic accident research
Background:
- Rapid gas pedal release often precedes braking.
- Previous studies suggested the advance brake warning system (ABWS) could prevent rear-end collisions.
- ABWS activates brake lights upon rapid deceleration before brake pedal application.
Purpose of the Study:
- To evaluate the effectiveness of the advance brake warning system (ABWS) in preventing rear-end collisions.
- To assess the real-world safety impact of ABWS in a fleet of government vehicles.
Main Methods:
- A paired-comparison study involving 764 government vehicles (half with ABWS, half without).
- Vehicles were tracked for crash involvement over an average of 35 months.
- Analysis focused on collisions where the government vehicles were rear-ended.
Main Results:
- Overall, ABWS-equipped vehicles were not significantly less involved in rear-end collisions.
- However, ABWS vehicles experienced fewer rear-end collisions per kilometer driven when examined as struck vehicles.
- The study did not demonstrate ABWS as a cost-effective safety device for preventing rear-end crashes.
Conclusions:
- The fleet study failed to confirm the effectiveness of ABWS in reducing overall rear-end collisions.
- Results contrast with earlier studies, highlighting the need for rigorous validation of in-vehicle safety technologies.
- A hierarchical approach to validating new automotive safety systems is advised before implementation.