Citation

Peterson D, Smith J. Collision 2009; 4(2): 97-104.

Copyright

(Copyright © 2009, Collision Publishing)

DOI

unavailable

PMID

unavailable

Abstract

Although accident investigators often must determine the amount of residual deformation of a damaged vehicle, time restrictions at the accident scene frequently do not allow sufficiently comprehensive vehicle damage data to be taken for use in calculations. Instead, an investigator may need to acquire deformation measurements independently. Common techniques for acquiring these measurements include the use of hand measurements, photogrammetric analysis, or a total station survey. A three-dimensional metrology tool also is available. This paper compares these methods of vehicle measurement for application to accident reconstruction. Each method was employed to model a subject vehicle, and the methods were compared to assess measurement accuracy, time required to acquire and process the data, cost of use for the data collection equipment, and general equipment ease of use. Findings indicate the photogrammetry appears to be the most convenient technique in terms of time, cost, portability and ease of use. Hand measurements may be a preferable approach if only a few measurements are required and immediate results are needed. Although a total station is simple to set up and reasonably quick to use, there is potential for error caused by poor reflectance from the vehicle surfaces. The three-dimensional metrology tool is the bulkiest and most expensive; however, it is a fast way to collect many data points and can be the easiest way to collect data from heavily deformed areas or interior locations. Since each measurement technique offers advantages and disadvantages, the accident investigator should choose the technique that best suits their specific situation.