Wyoming CMV Compliance Guide
WY DOT regulations for commercial motor vehicles
WYDOT Trucking & Commercial VehiclesOfficial WY DOT websiteOverview
WYDOT and the Wyoming Highway Patrol handle commercial vehicle enforcement. Wyoming is a major freight corridor with I-80 and I-25 as primary truck routes. The state's energy industry (coal, natural gas, wind) generates significant heavy hauling. Wyoming's extreme winter weather and high elevation create challenging driving conditions.
Inspection & Enforcement Program
Wyoming operates ports of entry on major highways. WHP officers perform Level I through Level III inspections. The state has enforcement presence at the Cheyenne (I-80/I-25) and Evanston (I-80) ports of entry.
Weight Limits & Oversize/Overweight
Wyoming follows federal weight limits of 80,000 lbs GVW on Interstate highways. On state highways, Wyoming allows higher weights with specific configurations, up to 117,000 lbs with proper permits. The state issues overweight permits for energy industry loads.
Wyoming-Specific Requirements
- Wyoming allows gross vehicle weights up to 117,000 lbs on certain state routes with proper permits and configurations.
- I-80 across southern Wyoming is one of the most frequently closed highways in the nation due to high winds and winter storms. Road closure protocols affect all commercial vehicles.
- The state requires all commercial vehicles to stop at open ports of entry.
- Wyoming's energy industry (coal, wind turbine components) requires specialized oversize/overweight permitting.
Contact
WYDOT Motor Carrier: (307) 777-4375
Federal Requirements That Apply in Wyoming
In addition to Wyoming-specific regulations, all federal DOT and FMCSA requirements apply to commercial vehicles operating in WY. 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 Wyoming DOT or your compliance advisor before relying on any information presented here.