OCCUPANT MONITORING DEVICE FOR VEHICLE AND TRAFFIC SYSTEM

An occupant monitoring device for a vehicle includes an image acquisition unit, a memory, a collision detector, and a controller. The image acquisition unit is configured to acquire a captured image of an occupant in the vehicle. The memory is configured to record the captured image acquired by the image acquisition unit. The collision detector is configured to detect collision of the vehicle. The controller is configured to control the image acquisition unit, the memory, and the collision detector. The controller is configured to detect each of consecutive collisions of the vehicle by the collision detector, acquire the captured image after each of the collisions by the image acquisition unit, and record the captured image acquired for each of the collisions on the memory.