Abstract
In this study, a collision-avoidance braking was used as an example, and a methodology for quantifying the damage-mitigation level using this system is discussed. A method for analyzing the damage-mitigation level is estimated through a time series Monte-Carlo simulation based on “the integrated error of driver and system”. First, driver performance in terms of braking timing and deceleration level for collision avoidance was analyzed in a driving simulator when the onset timing of the braking system was changed. Next, a driver model simulating braking behavior when a preceding vehicle started deceleration was constructed. Through the time series simulations using this driver model, the collision frequency with the preceding vehicle and the collision velocity were quantified. One result analyzed through this simulation study based on the "integrated error of driver and system" considering the driver’s risk taking behavior during the use of the system indicates that the collision frequency decreased from 6.64×10-1 to 1.00×10-5 when the driver used the information system for avoiding collisions. Although further verification regarding the numerical value of driver error and system error will be required, a methodology for evaluating effectiveness of collision-avoidance braking system is shown in this study.
Keywords: Collision-Avoidance Braking, Damage Mitigation Level, Collision Velocity, Driver Model, Integrated Error of Driver and System