Brakes

(a) The chassis brake system shall conform to the provisions of FMVSS Nos. 105, 106 and 121, as applicable. (b) The anti-lock brake system (ABS), provided in accordance with FMVSS Nos. 105 or 121 shall provide wheel speed sensors for each front wheel and for each wheel on at least one rear axle. Such systems shall provide anti-lock braking performance for each wheel equipped with sensors (also known as a four- channel system.) (c) All brake systems shall be designed to permit visual inspection of brake lining wear without removal of any chassis component(s). (d) The brake lines, booster-assist lines, and control cables shall be protected from excessive heat, vibration and corrosion and installed in a manner which prevents chafing. (e) The parking brake system for either air or hydraulic service brake systems may be of a power assisted design. The power parking brake actuator should be a push-pull device located on the instrument panel within seated reach of a 5th percentile female driver. As an option, the parking brake may be set by placing the automatic transmission shift control mechanism in the "park" position. (f) The power-operated parking brake system may be interlocked to the engine key switch. Once the parking brake has been set and the ignition switch turned to the "off" position, the parking brake cannot be released until the key switch is turned back to the "on" position. (g) Buses using a hydraulic-assist brake shall be equipped with visible warning signals that provide a continuous warning to the driver of a loss of fluid flow from the primary source and of a failure of the back-up pump system.