Effects of Collision Avoidance System on Driving Patterns in Curve Road Conflicts

AbstractStudies of collision avoidance system (CAS) are usually implemented by applying driving simulator or observing normal car following procedure. In order to understand its effect on drivers’ driving patterns under real world curve road conflict condition, this study carried out more than 500 tests with 55 drivers on a test road curve. By comparing the test results from CAS and non-CAS datasets, it was found that drivers drove slower and decelerate lighter after CAS was turned on. In addition, this study identified three types of driver in terms of safety performance of their brake and deceleration behaviors before encountering a road obstacle. It was found that many drivers became drivers with better driving patterns by the assistance of the CAS. These findings provided a quantitative understanding of the safety benefit from the application of CAS