South Dakota CMV Compliance Guide
SD DOT regulations for commercial motor vehicles
SD Truck InformationOfficial SD DOT websiteOverview
South Dakota Highway Patrol and SDDOT handle commercial vehicle enforcement. I-90 and I-29 are the primary freight corridors. The state's agricultural economy generates significant seasonal trucking.
Inspection & Enforcement Program
South Dakota operates weigh stations and ports of entry. The Highway Patrol performs Level I through Level III inspections.
Weight Limits & Oversize/Overweight
South Dakota follows federal weight limits of 80,000 lbs GVW on Interstate highways. On state highways, the state allows higher weights with specific configurations. South Dakota has seasonal weight restrictions during spring thaw.
South Dakota-Specific Requirements
- South Dakota allows higher weights on state highways with specific axle configurations.
- The state has seasonal spring thaw weight restrictions on many state and county roads.
- South Dakota allows longer combination vehicles on designated routes.
Contact
SDDOT Motor Vehicle: (605) 773-3314
Federal Requirements That Apply in South Dakota
In addition to South Dakota-specific regulations, all federal DOT and FMCSA requirements apply to commercial vehicles operating in SD. These guides cover each federal requirement in detail:
This information is provided as a general reference. State regulations change frequently. Always verify current requirements with the South Dakota DOT or your compliance advisor before relying on any information presented here.