Check Truck Size & Weight Configurations
For complete information, please go to Chapter 4 - Permits of the Motor Carrier Handbook
Carriers operating in South Dakota must ensure that they are operating within the maximum length, height, width and axle limitations and that they meet South Dakota bridge and weight laws. Information can be obtained by calling the Motor Carriers Services division of the South Dakota Highway Patrol at 605.773.4578 or click here to visit their website.
Below is a brief synopsis of size & weight regulations. For complete information and illustrations, please refer to the SD Motor Carrier Handbook, Chapter 4: Permits.
Vehicle Size Regulations
The maximum height for any vehicle, including load, is 14 feet.
1. A vehicle with a load of baled hay is permissible up to 14 feet 3 inches
2. Farm Machinery and Fire Equipment: No Height Limit
The maximum width of any vehicle is 102 inches (8 feet 6 inches).
1. Farm Machinery Operated by a Farmer: No Width Limitation except on the interstate system (daylight hours only)
Length limitations are illustrated in Table 5. Unless specifically addressed, the length limits shown only apply to the vehicle, and do not apply to the load carried on it. They are exclusive of the load overhang, retractable extensions used to support loads, and safety or energy conservation devices such as mirrors, turn signal lamps, hand holds, flexible fender extensions, and mud flaps. Retractable extensions must be retracted if not being used to support overhanging loads.
Loads or retractable extensions on any vehicle may not extend more than four feet beyond the rear bumper, bed or body, or more than three feet beyond the front bumper, bed or body of the vehicle carrying the load.
Vehicle Weight Regulations
Axle Group Limitations
The maximum allowable weight for all individual axles and axle groups is limited by statute:
Group Type - Maximum Allowable Weight Single Axles - 20,000 pounds Tandem Axles - 34,000 pounds Tridem Axles - 42,000 pounds Other Axle Groups - based on the Bridge Weight Formula.