Patent ID: 6905181

Claim:
An electric parking brake system comprising: a parking brake, and an electric motor, wherein the parking brake is activated by the electric motor, and operation of the parking brake is controlled such that a vehicle is decelerated at a target deceleration of a predetermined magnitude when an operation command to operate the parking brake is issued by a driver while the vehicle is running, the operation command is issued based on the operation of an operating member by the driver, and the predetermined magnitude of the target deceleration is set based on an amount of operation of the operating member, wherein the operating member comprises a switch which changes over from a non-command position to an operation command position when depressed by the driver and which is held at the operation command position only while kept depressed by the driver, a number of changeovers from the non-command position to the operation command position constitutes the amount of operation, and when the switch continues to be situated at the operation command position even after a vehicle body deceleration increases to the target deceleration, the target deceleration is increased.