Use of In-Vehicle Data Recorder shows crash rate reduction of 38 percent
Association for Safer Driving in Israel study of effect of feedback from IVDR on driver safety.
The implementation of the IVDR included two stages:
- Blind-profiling, where the drivers were informed that an IVDR was installed as a safety-related system but with no feedback about their driving. They were informed that the information collected by the system would not be used by their managers. It was expected that the installation had minimal effect on drivers' behavior during this period.
- Feedback stage - At the end of the blind-profiling, the drivers were informed about the IVDR system and the feedback it provides. They received initial feedback on their driving, and received access to a web site with their driving data compared to fleet averages. Drivers were informed that the IVDR record would not be used against them.
The results show a statistically significant reduction of 38 percent in crash rates, but not in fault crash rates, which were only reduced by 5 percent. Some of the reduction in overall crash rates may be attributed to a general decrease in crashes in the company fleet - a 19 percent reduction occurred during the period studied. The small reduction in fault crash rates may be a result of the small number of fault crashes in the sample.
Risk indices were calculated for the blind-profiling period and for seven months after exposure to the IVDR feedback. Comparison of these indices show a reduction in the mean risk index of 33 percent after initial exposure to the IVDR feedback. The risk indices remained at similar levels during the entire seven months after exposure. Additional analysis showed that risk indices could be reduced further if the drivers continue to access the IVDR feedback.
IVDR data is a reliable source of driving behavior and vehicle usage data. It is recommended for use by fleet safety managers, licensing authorities and parents of young drivers, insurance companies, and road authorities.
Author: Tomer Toledo, Oren Musicant, and Tsippy Lotan
Published By: Elsevier
Transportation Research Part C
Source Date: January 2008URL: http://www.sciencedirect.com/science/article/pii/S0968090X08000041
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electronic data recorders, electronic data recorder, EDR, black box, In-Vehicle Data Recorder, IVDR, driver behavior, driver safety, crash risk