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337. 18 TRAFFIC CODE 72 <br />and connected that, in case of a breakaway of the towed vehicle, the brakes <br />shall be automatically applied. <br />(e) In any combination of motor-drawn trailers or semitrailers equipped with <br />brakes, means shall be provided for applying the rearmost brakes in approx- <br />imate synchronism with the brakes on the towing vehicle, and developing the <br />required braking effort on the rearmost wheels at the fastest rate; or means <br />shall be provided for applying braking effort first on the rearmost brakes; <br />or both of the above means, capable of being used alternatively, may be em- <br />ployed. <br />(f) Every vehicle and combination of vehicles, except motorcycles and motorized <br />bicycles, and except trailers and semitrailers of a gross weight of less <br />than 2, 000 pounds, and pole trailers, shall be equipped with parking brakes <br />adequate to hold the vehicle on any grade on which it is operated, under all <br />conditions of loading, on a surface free from snow, ice or loose material. <br />The parking brakes shall be capable of being applied in conformance with <br />the foregoing requirements by the driver's muscular effort or by spring action <br />or by equivalent means. Their operation may be assisted by the service brakes <br />or other source of power provided that failure of the service brake actuation <br />system or other power assisting mechanism will not prevent the parking brakes <br />from being applied in conformance with the foregoing requirements. The <br />parking brakes shall be so designed that when once applied they shall remain <br />applied with the required effectiveness despite exhaustion of any source of <br />energy or leakage of any kind. <br />(g) The same brake drums, brake shoes and lining assemblies, brake shoe <br />anchors, and mechanical brake shoe actuation mechanism normally associated <br />with the wheel brake assemblies may be used for both the service brakes and <br />the parking brakes. If the means of applying the parking brakes and the ser- <br />vice brakes are connected in any way, they shall be so constructed that failure <br />of any one part shall not leave the vehicle without operative brakes. <br />(h) Every motor vehicle or combination of motor-drawn vehicles shall be capable <br />at all times and under all conditions of loading of being stopped on a dry, <br />smooth, level road free from loose material, upon application of the service <br />or foot brake, within the following specified distances, or shall be capable <br />of being decelerated at a sustained rate corresponding to these distances: <br />- From a speed of 20 miles per hour <br />Stopping distance Deceleration in <br />in feet feet per second <br />Brakes on all wheels . 30 . . 14 <br />Brakes not on all four wheels 40 . .10.7 <br />(i) All brakes shall be maintained in good working order and shall be so adjusted <br />as to operate as equally as practicable with respect to the wheels on opposite <br />sides of the vehicle. (ORC 4513.20) <br />1993 Replacement <br />