| 摘要 |
PROBLEM TO BE SOLVED: To eliminate annoyance with an alarm system by outputting a selected one of a plurality of types of alarm signals set in correspondence to combinations of hazard levels of obstructions and a driver's states including whether the driver observes an obstruction or not. SOLUTION: When an obstruction detection device detects an obstruction to a vehicle, an obstruction hazard level determination device determines a hazard level of the obstruction according to, for example, the possibility of collision between the obstruction detected by the obstruction detection device and the vehicle. A driver's state determination device determines the driver's state according to, for example, the driver's sight line direction. A vehicle hazard level calculation device calculates a vehicle hazard level according to the obstruction hazard level and the driver's state. An alarm output device outputs from an alarm device one of a plurality of types of alarm devices set in correspondence to the vehicle hazard level calculated by the vehicle hazard level calculation device. COPYRIGHT: (C)2004,JPO&NCIPI
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