Driver Reactions to Forward Collision Warnings
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Date
2019-11-06
Department
Transportation
Program
Master of Science
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Abstract
This study investigates driver behavior in terms of kept distance from obstacle, target-host velocity, change in speed, brake status and vehicle acceleration, after receiving Forward Collision Warning.
Data has been obtained from vehicles equipped with various sensors to monitor instantaneous vehicle performance and status as well as Connected Vehicle capability to communicate with Road-Side Units. Mobileye Forward Collision system is employed to detect obstacles in front of driver and communicate messages to driver as appropriate.
Results proved that drivers do not react dramatically after receiving warnings, instead, they tend to slow down a bit, keep longer distance to target and lower target-relative velocity to get the chance of better understanding of surrounding.
Furthermore, regarding to reaction time we found out that drivers react to such warnings on an average of 1.62 seconds which is significantly shorter than previous studies and can be considered an immediate response to the warnings.