A new threat assessment measure for collision avoidance systems

Collision avoidance systems (CAS) are an emerging automotive safety technology that assists drivers in avoiding collisions. They monitor the dynamic traffic and vehicle information in real time and assess the current threat level to decide if warnings should be issued to the driver or automatic brak...

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Bibliographic Details
Main Authors: Yizhen Zhang, Antonsson, E.K., Grote, K.
Format: Conference Proceeding
Language:English
Subjects:
Automotive engineering
Collision avoidance
Computerized monitoring
Content addressable storage
Humans
Road accidents
Safety
Timing
Vehicle driving
Vehicle dynamics
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Summary:Collision avoidance systems (CAS) are an emerging automotive safety technology that assists drivers in avoiding collisions. They monitor the dynamic traffic and vehicle information in real time and assess the current threat level to decide if warnings should be issued to the driver or automatic braking is needed to avoid collisions. Several measures have previously been defined for threat assessment with various warning and overriding algorithms proposed. A new threat assessment measure, time-to-last-second-braking (T lsb ) is proposed in this paper and its advantages over previous measures are discussed. It directly quantifies the danger or threat level of the current dynamic situation objectively as well as assesses the urgency level for the required evasive action, e.g., braking. It is in agreement with human natural judgment of the urgency and severity of threats. Furthermore, new warning and overriding criteria are proposed based on the new T lsb measure, providing more appropriate warning and more effective override timing
ISSN:2153-0009
2153-0017
DOI:10.1109/ITSC.2006.1706870