| Automatic collision avoidance system, as an integrated system of forward collision warning and automatic cruise control functions, has the potential to prevent about 6 to 15 percent of all rear-end crashes depending on the source of crash data used for safety benefits estimation. This system effectiveness ranges between 3 and 26 percent according to 95 percent confidence bounds. |
The results are based on data collected from a field operational test involving 10 vehicles and 66 drivers and on a system characterization test. |
Najm W., Stearns M., Howarth H. Koopmann J. and Hitz J. |
2006 |
Evaluation of an Automotive Rear-End Collision Avoidance System, Volpe National Transportation Systems Center, USA . |
| The possibilities of current ACC systems in improving traffic safety and reducing congestion seem limited: although positive effects on driver safety and traffic safety were found, some negative effects are a cause for concern. The ACC systems should be extended with a Stop-and-Go functionality and preferably also with collision warning or collision avoidance capabilities. |
The results presented were based on a literature study on subject. |
Hoethink, A. |
2003 |
Advanced Cruise Control in the Netherlands: a critical review. 10th World Congress and Exhibition on Intelligent Transport Systems and Services, Madrid 16-20 November 2003. Proceedings, CD-ROM. ERTICO, ITS Europe |
| Effectiveness of Forward Obstacles Collision Warning Systems using the in-vehicle information and the road-side information was evaluated introducing the velocity at 100m point forward the obstacle as a new evaluation criteria. As the results, it was clarified that the integrated road side/in-vehicle information has significant effectiveness. |
Simulator studies |
Yamada, K. |
2002 |
Evaluation of forward obstacles collision avoidance support system using driving simulator. 9th World congress on intelligent transport systems, Chicago October 14-17 2002. Proceedings, CD-ROM. |
| The number of annoying warning can be reduced. It is also possible to predict the braking action, using the Hidden Markov Models applied in real traffic situations. |
A collision warning system based on the prediction of driver's braking action was developed. Results of the study are based on field experiments with 18 people. |
Sakabe M., Watanabe K. & Ohno H. |
2002 |
Development of a collision warning system based on the prediction of driver's braking action. 9th World congress on intelligent transport systems, Chicago October 14-17 2002 |
| Without warning, the braking time increases as the awareness level decreases. A warning system that can compensate for a decline in driver perceptual ability caused by sleepiness is effective. |
Results of the study are based on measurements of reaction time and some measurements in real traffic situations. |
Yamada, K. |
2000 |
Driver reaction time to forward vehicle collision warning - effectiveness of warning system under low awareness level. 7th World Congress on Intelligent Transport Systems, Turin 6-9 November 2000. Proceedings, CD-ROM. ERTICO - ITS Europe |