Trucking Regulations in Utah
Complete guide to weight limits, speed limits, permits, chain laws, and special rules for commercial truck drivers operating in Utah.
Max Gross Weight
80,000 lbs (129,000 lbs on state routes with permit)
Truck Speed Limit
70 mph on interstates
Diesel Tax
$0.345 per gallon diesel + federal
Weight & Size Limits in Utah
| Measurement | Limit |
|---|---|
| Max Gross Vehicle Weight | 80,000 lbs (129,000 lbs on state routes with permit) |
| Max Axle Weight | 20,000 lbs single axle, 34,000 lbs tandem |
| Max Trailer Length | 65 ft overall, 95 ft for doubles on designated routes |
| Max Width | 102 inches |
| Max Height | 14 ft |
Speed Limits for Trucks in Utah
Rural Interstate
80 mph (cars), 70 mph trucks
Urban Interstate
55-65 mph
Truck-Specific
70 mph on interstates
Fuel Tax & Tolls in Utah
Diesel Fuel Tax
$0.345 per gallon diesel + federal
Toll Roads & Bridges
Express lanes on I-15 in Salt Lake City area (Utah Express). Otherwise no toll roads.
Chain Laws & Weather Requirements
Chain carry required October 1 to April 30 on mountain passes. UDOT can mandate chain-up during storms.
Oversize & Overweight Permits
UDOT Motor Carrier Division. Utah allows up to 129,000 lbs on state routes. Online permitting available.
Port of Entry & Weigh Stations
Ports of entry on I-15, I-80, I-70, and I-84. All commercial vehicles must stop. PrePass accepted.
Special Rules for Utah
Hazmat Route Restrictions
Hazmat restricted through downtown Salt Lake City. Designated routes around SLC metro area. Specific hazmat routing through Wasatch Range passes.
Rest Area & Parking Rules
Rest areas allow overnight parking. Good spacing on I-15 and I-80. No anti-idling law.
DOT Inspection Frequency
Moderate. Utah Highway Patrol motor carrier division conducts inspections at ports of entry and via mobile units.
Looking for Trucking Jobs in Utah?
Browse CDL driver positions and connect with carriers operating in Utah.
Frequently Asked Questions About Utah Trucking Regulations
What is the maximum truck weight in Utah?
Utah allows up to 129,000 lbs on designated state routes with proper multi-axle configurations and permits. Interstate highways follow the federal 80,000 lbs limit. Triple trailers are also permitted on designated routes. This supports Utah's mining and construction industries.
What is the truck speed limit in Utah?
Utah has a 70 mph truck speed limit on rural interstates while passenger vehicles can travel 80 mph. Urban interstates in the Salt Lake City area are 55-65 mph. The 10 mph car-truck differential is enforced.
Are chains required in Utah?
Utah requires trucks to carry chains from October 1 through April 30. UDOT can require chain-up on Wasatch Range passes, Parley's Canyon (I-80), Sardine Canyon (US-89/91), and other mountain routes during winter storms. Fines for not carrying chains during mandatory periods are significant.
Are triple trailers allowed in Utah?
Yes, Utah permits triple trailers on I-80 and other designated routes. Utah is one of the western states that allows triple trailer configurations, supporting efficient long-haul operations across the Great Basin.
What freight moves through Utah?
Utah's freight mix includes mining products (copper, gold, coal from central Utah), construction materials, e-commerce distribution (Amazon, UPS, FedEx have major SLC facilities), and significant through-freight on the I-15/I-80 crossroads. Salt Lake City is a major Western distribution hub.