A control device executes the following processes: a first process of detecting that autonomous traveling control is not able to be continued and executing stop control of a vehicle; a second process of determining whether a person is present in the vehicle; and a third process of unlocking a door lock of the vehicle when at least one person is present in the vehicle after the vehicle is stopped by the first process.

A control device executes the following processes: a first process of detecting that autonomous traveling control is not able to be continued and executing stop control of a vehicle; a second process of determining whether a person is present in the vehicle; and a third process of unlocking a door lock of the vehicle when at least one person is present in the vehicle after the vehicle is stopped by the first process.

The present invention provides an onboard locking device and locking system capable of automatically locking a vehicle door after confirming that a portable device is outside the vehicle and at least a predetermined distance away. An onboard locking device which, when a door provided to a vehicle is in a closed state, performs wireless communication with a portable device and locks the vehicle door in accordance with a result of the wireless communication. The onboard locking device includes a distance identifier identifying a distance of the portable device relative to the vehicle using wireless communication with the portable device; a determiner determining whether the distance identified by the distance identifier is at least a predetermined distance; and a locker locking the vehicle door when the determiner determines that the predetermined distance has been met or exceeded.