DRIVE ASSIST SYSTEM

A drive assist system includes an occupant monitoring apparatus, a determination apparatus, and a drive assist control apparatus. The occupant monitoring apparatus monitors a physical state of an occupant, including a driver, of a vehicle. The determination apparatus determines a traveling state and a stopped state of the vehicle. The drive assist control apparatus executes a control to secure safe traveling upon determining that sleep duration of the occupant is less than a predetermined time and quality of sleep thereof is lower than a predetermined level on the basis of monitoring information acquired by the occupant monitoring apparatus. The drive assist control apparatus includes one or more processors that perform, in a case where determination information from the determination apparatus indicates the stopped state, a control of appropriately restricting the driver's driving operation on the basis of at least the sleep duration and the quality of sleep of the driver.