Every truck with three or more axles equipped with vacuum assistor type brakes and every truck tractor and truck used for towing a vehicle equipped with vacuum brakes shall be equipped with a reserve capacity or a vacuum reservoir sufficient to ensure that, with the reserve capacity or reservoir fully charged and with the engine stopped, a full service brake application may be made without depleting the vacuum supply by more than forty percent. A violation of this section is a Class 2 misdemeanor.

Source: SL 1967, ch 197 , § 1 (i) (2); SL 1989, ch 255 , § 81.