Abstract
A blind spot detector (BSD) interface is proposed with three alerting functions corresponding to the incremental stages of hazard arising from a lane change manoeuvre whilst a vehicle remains hidden in the side-mirror blind spot. This three-level staging takes advantage of peripheral vision and audible alarms to attract attention and increases alarm urgency to match the developing hazard. The functional requirements of the BSD for user acceptance and system safety are discussed: (1) fail-safe functioning; (2) BS parameters; (3) false-alarm rate; and (4) behavioural compensation and system dependency. (A)