| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a driver state decision device deciding a careless state of a driver with high accuracy. Ž<P>SOLUTION: This driver state decision device has at least one of a line-of-sight detection means and an operation state detection means, an environment recognition means, and a careless state decision means. The line-of-sight detection means detects a state of a line-of-sight of the driver. The operation state detection means detects an operation state of a vehicle by the driver. The environment recognition means detects environment around the vehicle. The careless state decision means compares a detection value detected by at least one of the line-of-sight detection means and the operation state detection means and each threshold value, and decides the careless state of the driver based on the result thereof. Each threshold value varies according to the environment detected by the environment recognition means. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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