32-18-11. Towing vehicles with air brakes--Application of trailer brakes--Automatic application--Manual application--Violation as misdemeanor.
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/sd/title-32/chapter-32-18/32-18-11A research copy — for the controlling text, always check the official state or federal source. Not legal advice.
Every towing vehicle, when used to tow another vehicle equipped with air controlled brakes, in other than driveaway or towaway operations, shall be equipped with two means for emergency application of the trailer brakes. One of these means shall apply the brakes automatically in the event of a reduction of the towing vehicle air supply to a fixed pressure which may not be lower than twenty pounds per square inch nor higher than forty - five pounds per square inch. The other means shall be a manually controlled device for applying and releasing the brakes, readily operable by a person seated in the driving seat, and its emergency position or method of operation shall be clearly indicated.
In no instance may the manual means be so arranged as to permit its use to prevent operation of the automatic means. The automatic and the manual means required by this section may be, but are not required to be, separate. A violation of this section is a Class 2 misdemeanor.