A. Class A: Class A tow truck shall be capable of towing and recovery of passenger cars, pickup trucks, small trailers or equivalent vehicles, and shall have:
1. A minimum manufacturer's gross vehicle weight rating (GVWR) of not less than thirteen thousand five hundred (13,500) pounds, with dual rear tires; and
2. A wheel lift with a minimum manufacturer's rating of three thousand (3,000) pound lift rating retracted; and
3. A boom with a minimum manufacturer's rating of four (4) ton capacity with single or dual winches; and
4. Winches with a minimum manufacturer's rating of eight thousand (8,000) pounds; and
5. Wire rope (winch line) which shall be a minimum three- eighths inch (3/8") diameter (6 x 19) or OEM specification, and not less than one hundred feet (100') continuous length.
B. Class B: Class B tow truck shall be capable of towing and recovery of medium size trucks, trailers, motor homes or equivalent vehicles, and shall have:
1. A minimum manufacturer's GVWR of not less than twenty five thousand (25,000) pounds with dual rear tires; and
2. A wheel lift/under lift with a minimum manufacturer's rating of five thousand (5,000) pound lift rating retracted; and
3. A boom with a minimum manufacturer's rating of twelve (12) ton capacity, with single or dual winches; and
4. Winches with a minimum manufacturer's rating of ten thousand (10,000) pounds; and
5. Wire rope (winch line) which shall be a minimum seven- sixteenth inch (7/16") diameter (6 x 19) or OEM specification, and not less than one hundred fifty feet (150') continuous length.
C. Class C: Class C tow truck shall be capable of towing and recovery of large trucks, trailers, buses, motor homes or similar vehicles, and shall have:
1. A minimum manufacturer's GVWR of not less than forty thousand (40,000) pounds with tandem drive axles; and
2. An under lift with a minimum manufacturer's rating of twenty five thousand (25,000) pounds retracted; and
3. A boom with a minimum manufacturer's rating of twenty (20) ton capacity with single or dual winches; and
4. Winches with a minimum manufacturer's rating of twenty thousand (20,000) pounds; and
5. Air brakes with air hookup package capable of supplying air to disabled vehicles; and
6. Wire rope (winch line) which shall be a minimum five- eighths inch (5/8") diameter (6 x 19) or OEM specification, and not less than two hundred feet (200') continuous length; and
7. Tow bar or tow sling (if equipped) with a minimum twelve thousand (12,000) pound rating.
D. Class D: Class D tow truck shall be designed and intended to transport other vehicles by loading the vehicle entirely onto the truck; may be flatbed, roll bed or rail type design, and shall have:
1. Light duty; one vehicle:
a. A minimum manufacturer's GVWR not less than thirteen thousand (13,000) pounds with dual rear tires; and
b. Winch with a minimum manufacturer's rating not less than eight thousand (8,000) pounds; and
c. Wire rope (winch line) with a minimum three-eighths inch (3/8") diameter (6 x 19) or OEM specifications, and not less than forty feet (40') continuous length.
2. Light duty; two (2) vehicle:
a. A roll bed equipped with wheel lifts or tow bar; and
b. A minimum manufacturer's GVWR of more than sixteen thousand (16,000) pounds with dual rear tires; and
c. Winch with a minimum manufacturer's rating not less than eight thousand (8,000) pounds; and
d. Wire rope (winch line) with a minimum three-eighths inch (3/8") diameter (6 x 19) or OEM specifications, and not less than forty feet (40') continuous length; and
e. Wheel lift/tow bar with a minimum manufacturer's rating of three thousand (3,000) pound lift rating retracted.
3. Medium duty:
a. A minimum manufacturer's GVWR not less than twenty five thousand (25,000) pounds with dual rear tires; and
b. Winch with a minimum manufacturer's rating not less than eight thousand (8,000) pounds; and
c. Wire rope (winch line) with a minimum three-eighths inch (3/8") diameter (6 x 19) or OEM specifications, and not less than forty feet (40') continuous length; and
d. Wheel lift/tow bar with a minimum manufacturer's rating of three thousand (3,000) pound lift rating retracted. (1952 Code § 10-23-05.1)