To reduce moment generated at the proximal portion and the supporting portion of a brake pedal and to prevent an increase in weight even when the brake pedal is disposed outside a vehicle body and an operating unit is disposed away from the brake pedal within the vehicle body. A supporting shaft rotates integrally with the brake pedal by being connected with the brake pedal at one end with a supporting member for supporting both ends of the supporting shaft. An operating member is provided for operating an operating unit by rotation of the brake pedal and the supporting shaft by being connected to the other end of the supporting shaft at the position away from the brake pedal are provided. A pedal pad unit includes a flat depressing surface forming portion to be covered by a cover on the front face on which the driver depresses and a mounting portion extending from the depressing surface forming portion in the direction opposite from the cover for being pivotally mounted on the pedal lever unit. The depressing surface forming portion and the mounting portion are integrally formed.