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ABS and Relative Crash Risk Under Different Roadway, Weather, and Other Conditions
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Abstract
The influence of anti-lock braking systems (ABS) on relative crash risk is examined by comparing the ratio of the number of crashes under an adverse condition (say, when the pavement is wet) to the number of crashes under a normal condition (say, when the pavement is dry) for vehicles with and without ABS. The study used seven General Motors passenger vehicles having ABS as standard equipment for 1992 models but not available for 1991 models. Crashes in 1992 and 1993 in Texas and Missouri were analyzed. After correcting for model year effects not linked to ABS, etc., the following associations between ABS and crash risk were obtained (the errors are one standard error); a (13 ± 4)% lower crash risk on wet roads (assuming no change on dry roads); a (13 ± 5)% lower crash risk when it is raining (assuming no change under clear weather); a (34 ± 15)% lower risk of a pedestrian crash (assuming no change for non-pedestrian crashes). ABS was associated with a (44 ± 22)% increase in rollover crash risk (assuming no change in risk for non-rollover crashes). As only relative risks are measured, conclusions are contingent on crucial assumptions. These results are consistent with any of the following conclusions. If we assume that ABS is associated with no difference in crash risk on dry roads, then ABS reduces overall crash risk by (3 ± 1)%. If we assume that ABS reduces crash risk on dry roads, this estimate should be increased by the assumed amount (other investigations imply that large overall reductions are unlikely). If we assume that drivers use some of the improved braking provided by ABS for benefits other than safety, such as slightly higher travel speeds, then (absent further findings or assumptions) we cannot estimate the overall effect on crash risk.
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Evans, L., "ABS and Relative Crash Risk Under Different Roadway, Weather, and Other Conditions," SAE Technical Paper 950353, 1995, https://doi.org/10.4271/950353.Also In
References
- Evans, L. Traffic Safety and the Driver Van Nostrand Reinhold 1991
- Rompe, K. Schindler, A Wallrich, M. Advantages of an anti-wheel lock system (ABS) for the average driver in difficult driving situations Proceedings of the Eleventh International Technical Conference on Experimental Safety Vehicles Washington, DC National Highway Traffic Safety Administration report DOT HS 807 223 442 448 November 1988
- Eddie, R. Ice, ABS, and temperature SAE paper 940724 Warrendale, PA Society of Automotive Engineers 1994 Accident Reconstruction: Technology and Animation IV SAE Special Publication SP-1030 163 8 1994
- Lambourn, R.F. Braking and cornering effects with and without anti-lock brakes SAE paper 940723 Warrendale, PA Society of Automotive Engineers 1994 Accident Reconstruction: Technology and Animation IV SAE Special Publication SP-1030 155 61 1994
- Langwieder, K. VII.-Symposium München 1986
- Biehl, B. Aschenbrenner, M. Wurm, G. Köln 1987
- Kullgren, A Lie, A Tingvall, C The effectiveness of ABS in real life accidents Paper Number 94 S4 O 07 14th Enhanced Safety of Vehicles Conference Munich, Germany May 1994
- Barr, A Norup, H. Anti-lock braking systems study Vehicle Information Center of Canada Markham, Ontario, Canada February 1994
- Highway Loss Data Institute Collision and property damage liability losses of passenger cars with and without antilock brakes Arlington, VA Insurance Special Report A-41 January 1994
- Insurance Institute for Highway Safety Status Report Articles “Antilocks may not make the difference that many expected” and “What antilocks can do, what they cannot do.” Arlington, VA 29 2 29 January 1994
- Kahane, C.J. An evaluation of center high mounted stop lamps based on 1987 data Washington, DC National Highway Traffic Safety Administration report DOT HS 807 442 July 1989
- Schlesselman, J.J. Case-control studies: Design, conduct, analysis New York, NY Oxford University Press 1982
- Kahane, C.J. Preliminary evaluation of the effectiveness of rear-wheel antilock brake systems for light trucks Washington, DC National Highway Traffic Safety Administration December 1993
- Smiley, A Rochford, S. Behavioural adaptation and anti-lock brake systems Report for Transport Canada 3 October 1991
- Janssen, W. Seat-belt wearing and driver behavior: An instrumented-vehicle study Accident Analysis and Prevention 26 249 261 1994
- Gibson, J.J. Crooks, L.E. A theoretical field-analysis of automobile driving American Journal of Psychology 51 453 471 1938
- Evans L. Rothery, R. Comments on effects of vehicle type and age on driver behaviour at signalized intersections Ergonomics 19 559 570 1976
- Williams, A.F Wells, J.K. The experience of drivers with antilock brake systems Insurance Institute for Highway Safety Arlington, VA 1993
- Summala, H. Zero-risk theory of driver behaviour Ergonomics 31 491 506 1988