Hydraulic System. Tests and Visual Inspection Procedures. Results will indicate whether or not a vehicle has reasonably safe brakes at the time of inspection. These procedures are applicable to vehicles equipped with hand controls for the physically handicapped. If equipped with power assisted hydraulic brakes, system shall be functioning as designed. All four wheels shall be removed for brake inspection. Do not remove wheel cylinder dust boots for inspection. Leakage can be determined by pushing on the outside of the boot. Drums and Discs. All four wheels shall be removed for brake inspection. On vehicles equipped with disc brakes some drag can be felt when turning the wheel and tire. This drag is not excessive if the wheel can be turned readily with one hand. Linings and Pads. Remove all wheels and drum assemblies for inspection of linings on drum brakes. On vehicles equipped with disc brakes, only removal of the wheels is necessary. Mechanical Linkage. Mechanical linkage includes the service brake mechanism, parking brake, and manual controls on vehicles equipped for physically handicapped persons. Power Assisted Brake Systems (If so equipped). Parking Brake. Parking Brake Function. A positive locking brake shall be provided. It shall be either a hand or foot operated type mechanism as described in SAE J2358, which is incorporated by reference in Regulation .02 of this chapter. Any parking brake shall hold a stopped vehicle firmly on all normal road grades. Definitions. “Brake system” means a combination of one or more brakes and their related means of operation and control and is equipped with brakes acting on all wheels. “Emergency brake system” means a brake system used for retarding and stopping the vehicle in the event of a malfunction in the service brake system. This function may be performed by the parking brake system or by a portion of the service brake system, or by a separate brake system. “Parking brake system” means a brake system used to hold and maintain a vehicle in a stationary position with a positive mechanical means employed to hold the brake applied when the vehicle is unattended. “Pedal reserve”, as applied to hydraulic, mechanical, or power-assisted hydraulic brakes, means the amount of total pedal travel left in reserve when the pedal is depressed to the brake-applied position. The pedal reserve check is to ascertain the degree of the brake adjustment and to demonstrate satisfactory brake actuating system condition. “Service brake system” means a brake system used for retarding, stopping, and controlling the vehicle under normal operating conditions. “Stopping distance” means the distance traveled by a vehicle from the point of application of force to the brake control, to the point at which the vehicle reaches a full stop.