Title: Collision-mitigation level of collision-avoidance braking system

Authors: Keisuke Suzuki; Hitoshi Tanaka; Yoshiki Miichi; Masami Aga

Addresses: Kagawa University, Hayashi-cho 2217-20, Takamatsu, 761-0396, Japan ' Kagawa University, Hayashi-cho 2217-20, Takamatsu, 761-0396, Japan ' Toyota Motor Corporation, Toyota-cho 1, Toyota, 471-8572, Japan ' Toyota Motor Corporation, Toyota-cho 1, Toyota, 471-8572, Japan

Abstract: In this study, a methodology for estimating the collision mitigation ratio using collision-prevention support braking system is discussed. A method for analysing the collision-mitigation ratio is discussed 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 investigated in a driving simulator when the control timing of the braking-support system was changed. In this analysis, the braking behaviour of the driver during malfunction of the system and this behaviour when the driver was informed about the malfunction of the system were also investigated. Next, a driver model simulating braking operation, when a preceding vehicle started slowdown, was constructed. Through time series Monte-Carlo simulations using this driver model, the frequency of collisions to a preceding vehicle and the collision velocity were estimated.

Keywords: collision avoidance braking; collision mitigation level; collision velocity; driver mode; integrated error; risk taking behaviour; system malfunction; Monte Carlo simulation; driving simulator; driver performance; braking timing; deceleration level; driver modelling; vehicle accidents; vehicle safety.

DOI: 10.1504/IJVS.2014.058238

International Journal of Vehicle Safety, 2014 Vol.7 No.1, pp.1 - 16

Received: 01 Dec 2011
Accepted: 16 Jan 2013
Published online: 30 Oct 2014 *

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