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suppression of fires and mitigation of other hazardous situations on a Class I highway, may not exceed 86,000 pounds gross weight, or any of the following weight allowances: (i) 24,000 pounds on a single steering axle; (ii) 33,500 pounds on a single drive axle; (iii) 62,000 pounds on a tandem axle; or (iv) 52,000 pounds on a tandem rear drive steer axle. (16) A bus, motor coach, or recreational vehicle may carry a total weight of 24,000 pounds on a single axle, but may not exceed other weight provisions of this Section. Gross weight limits shall not apply to the combination of the tow truck and vehicles being towed. The tow truck license plate must cover the operating empty weight of the tow truck only. The weight of each vehicle being towed shall be covered by a valid license plate issued to the owner or operator of the vehicle being towed and displayed on that vehicle. If no valid plate issued to the owner or operator of that vehicle is displayed on that vehicle, or the plate displayed on that vehicle does not cover the weight of the vehicle, the weight of the vehicle shall be covered by the third tow truck plate issued to the owner or operator of the tow truck and temporarily affixed to the vehicle being towed. If a roll-back carrier is registered and being used as a tow truck, however, the license plate or plates for the tow truck must cover the SB3019 Enrolled LRB104 20255 HLH 33706 b Public Act 104-0468