Trans 330.07(2)(2) The vehicle shall be inspected under this chapter for compliance with sub. (1). Trans 330.07 HistoryHistory: Cr. Register, May, 1991, No. 425, eff. 6-1-91; CR 19-004: renum. Trans 330.07 to (1) (intro.) and (2) and am., cr. (1) (a) to (g) Register November 2019 No. 767, eff. 12-1-19. Trans 330.10Trans 330.10 Equipment requirements and standards. A motor bus shall comply with the following equipment requirements and standards: Trans 330.10(1)(1) Aisle width. The center aisle shall have a minimum clearance of 12 inches in width. The center aisle shall extend from the driver’s compartment to the rear of the vehicle or to the seat of a bench seat installed across the rear width of the vehicle. Trans 330.10(2)(2) Battery. The battery shall be securely installed to prevent dislocation in the event of an accident in the manner provided in 49 CFR 393.30, except that the battery may not be installed in the passenger compartment. Trans 330.10(4)(4) Bumpers. The front bumper shall have at least an 8-inch face and shall extend at least between the frame rails. The bumper shall be of sufficient strength and shall be positioned to permit pushing a vehicle of similar weight without permanent distortion to the bumper, chassis or body. The rear bumper shall be of sufficient strength and shall be positioned as specified in 49 CFR 393.86 to permit the motor bus to be pushed without permanent distortion to either the bumper or body. Bumpers may not be missing, loosely attached or protruding beyond the confines of the vehicle so as to create a hazard. Trans 330.10(6)(6) Drive shaft and universal joints. The drive shaft shall be protected as provided in 49 CFR 393.89. The universal joints and center bearing may not be loose or worn. Trans 330.10(7)(7) Emergency equipment. Emergency equipment, including fire extinguishers, shall conform to the requirements under 49 CFR 393.95, except that the warning devices for a stopped motor bus may not include liquid-burning emergency flares. Trans 330.10(9)(9) Exhaust system. In addition to the requirements under 49 CFR 393.83, the exhaust system, including exhaust manifolds, joining gaskets, pipes from the muffler, tail pipe and pipes from the exhaust manifold, may not enter the passenger compartment at any location. The complete exhaust system shall be tightly connected and free of leaks. Trans 330.10(10)(10) Fenders. Each motor bus shall be equipped with fenders or shall have a body construction that provides protection from debris thrown by the vehicle’s tires. All tire tread shall be within the fenders or protective body construction. Trans 330.10(12)(12) Frame. The frame shall conform to the requirements under 49 CFR 393.201. Frames may be modified only as specified by a manufacturer to ensure conformity with applicable federal motor vehicle safety standards. Trans 330.10(13)(13) Fuel system. In addition to the requirements under 49 CFR 393.65, 393.67 and 393.69, the fuel tanks and fuel system shall be maintained free of leaks. The fuel tank shall be attached to the motor bus in a manner that prevents movement of the tank while the vehicle is in motion. Trans 330.10(14)(a)(a) In addition to the requirements under 49 CFR 393.77, a heater shall be capable of maintaining an inside temperature throughout the motor bus of not less than 50° fahrenheit at average minimum January temperatures as established by the U.S. department of commerce weather bureau for the area in which the motor bus is operated. Trans 330.10(14)(b)(b) The heater hose shall be adequately supported to guard against excessive wear or abrasion and shall not interfere with or restrict the operation of any engine function. Heater lines inside the passenger compartment shall be shielded to prevent accidental contact by the driver or passengers. Trans 330.10(15)(15) Horn. A motor bus shall be equipped with a horn in good working order and capable of emitting a sound audible under normal traffic conditions from a distance of not less than 200 feet. Trans 330.10(16)(16) Instruments and gauges. Every motor bus originally equipped with any of the following instruments, warning devices or gauges shall be maintained with that equipment or a comparable replacement in good working condition: Trans 330.10(16)(a)(a) Air pressure or vacuum gauge, where air or vacuum brakes are used, with a low energy supply warning system.