THE STATISTICAL ACCURACY OF DELTA-V IN SYSTEMATIC FIELD ACCIDENT STUDIES
Much attention has been paid to the importance of calculating delta-V (the change of velocity during impact) and other impact severity measures accurately. However delta-V cannot be evaluated in every case sampled by a systematic study of road accidents. This can lead to statistical distortions if the subsample of cases for which delta-V is calculated is not representative of the whole sample. This problem has received less recognition than the problem of calculating delta-V accurately when it is calculated. This paper contains new results on the accuracy of CRASH3 delta-V for European passenger cars and a discussion of the problem of calculating delta-V for a representative subsample. On the data available, CRASH3 underestimates delta-V for rigid and deformable barrier impacts but not frontal car-to-car impacts. The statistical results obtained using any single method for calculating delta-V are likely to be unrepresentative of certain classes of impact type, impact severity and collision partner. A flexible approach towards using a variety of methods to evaluate delta-V is necessary to counter this difficulty. For the covering abstract see ITRD E107709.
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Availability:
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Authors:
- LENARD, J
- HURLEY, B
- Thomas, P
- Conference:
- Publication Date: 2000
Language
- English
Media Info
- Features: References;
- Pagination: p. 201-8
Subject/Index Terms
- TRT Terms: Automobiles; Biophysics; Crash severity; Crashes; Deformation; Errors; Injuries; Injury severity; Measurement; Vehicles
- ITRD Terms: 2060: Biomechanics; 1243: Car; 1631: Collision; 5595: Deformation; 6440: Error; 2163: Injury; 6136: Measurement; 1623: Severity (accid, injury); 1255: Vehicle
- Subject Areas: Safety and Human Factors; Vehicles and Equipment;
Filing Info
- Accession Number: 00805320
- Record Type: Publication
- Source Agency: Transport Research Laboratory
- ISBN: 1-86058-271-0
- Files: ITRD
- Created Date: Feb 7 2001 12:00AM