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Utah trucking rules

Fees, CDL costs, weight and size limits, chain laws and new bills for truckers and trucking companies in Utah. Updated 2026-10-21.

Must-know rules · Weight, oversize & chains · Fees · Bills

Must-know rules

Utah's biggest trucker-specific features are UDOT's three border ports of entry (St. George, Echo, Wendover), where you can get an oversize permit on arrival, and a 24-hours-before-the-storm traction law with a 5/32-inch tread minimum in the Cottonwood Canyons. I could not confirm Utah's handheld-phone law, IFTA/IRP/weight-distance tax details, any truck-specific speed limit, any hazmat tunnel rule, or what HB0118, HB0228 and SB0190 do, so those are left out.

Researched by our AI agent from the linked sources on 2026-10-21. Always confirm with the source.

• Must knowSpeed limits (no truck-specific limit confirmed)

  The statute sets posted limits for all vehicles at no more than 65 mph generally and 75 mph on freeways and limited-access highways. UDOT may post higher limits on freeways, and 80 mph exists on some rural interstates. I did not find an official lower limit for trucks, so obey the posted signs.

  Utah Code Title 41, Chapter 6a, Part 6 – Speed Restrictions
• Must knowLegal size and axle weights

  Without a permit the limits are 14 ft high, 8 ft 6 in wide, a 53 ft semi-trailer, and 61 ft for double-trailer combinations. The single-axle limit is 20,000 lb and the tandem-axle limit is 34,000 lb.

  Oversize and Overweight Permits – UDOT TruckSmart

Weight limits, oversize permits and chain laws

Our agent is still researching Utah's weight, size and chain rules. Check back soon.

Fees and DOT requirements

Utah sets heavy-truck registration by gross laden weight under a statutory formula, with no per-weight table. A value-based uniform fee is also reported by secondary sources only. UDOT's own flowchart shows state operating authority is tied to interstate for-hire operations, so I found no state authority for in-state-only carriers, though one non-official site says otherwise.

Class B CDL

$52 for 5 years (about $10.40 a year)
The DLD fee page lists a CDL with written knowledge test (Class A, B or C, 5-year expiration) at $52, and a CDL with driving skills test at $78. Each CDL endorsement is $9. The fee page is ambiguous about whether the $78 replaces or adds to the $52. The statute (version effective 5/1/2024, supersede Source

Class A CDL

$52 for 5 years (about $10.40 a year)
Same fee table as Class B: Class A, B and C share one fee schedule ($52 with knowledge test, $78 with skills test, $9 per endorsement). Utah's fee page does not price Class A and Class B separately. Source

Registration, 26,001 lb straight truck

$183.50 a year Source

Registration, 80,000 lb combination

$677.50 a year Source

How registration is figured

Registration is by gross laden weight, computed in units of 2,000 lb, and a fractional unit counts as a full unit. The fee is paid at initial registration and annually after that. The power unit is registered for the combined gross weight of the truck or tractor and all trailers when loaded. Per the
The two dollar amounts are my calculation from the statute formula, not figures printed in an official table: $69.50 + $19 x 6 units for 26,001 lb, and $69.50 + $19 x 32 units for 80,000 lb. They assume the 16,000 lb threshold, which I could not confirm from the statute text. Verify with the Utah DMV before budgeting. They exclude the uniform fee, which a secondary source reports is 1.5% of fair m Source

Intrastate operating authority

Not required for intrastate carriers.
UDOT's When is Operating Authority Required flowchart starts by asking whether the carrier is in interstate commerce, and if not the answer is Not Required. The $300 OP-1 fee shown on that page is the federal application for authorized for-hire interstate carriers. Conflict: one non-official compliance-service site says in-state for-hire carriers need Utah Public Service Commission authority. I fo Source

State DOT requirements

• Must knowUSDOT number for intrastate carriers

  UDOT says companies operating commercial vehicles in intrastate or interstate commerce must be registered with the FMCSA and have a USDOT number. There is no fee for the number. I found no separate Utah-issued state DOT number. The exact weight threshold for intrastate carriers was not confirmed from an official source.

  UDOT - USDOT Numbers & Registering with the FMCSA

See all 8 DOT requirements with full access

Fees change; confirm with the linked state source. Compare all states.

New Utah trucking bills

Enacted signed into law · Pending still moving through the legislature · Did not pass

• Enacted UT HB0118: Driver Training Schools for Commercial Driver License Amendments Governor Signed in Lieutenant Governor's office for filing · 2026-03-26
• Enacted UT SB0190: Trailer Registration Amendments Governor Signed in Lieutenant Governor's office for filing · 2026-03-23

Bill data from LegiScan (CC BY 4.0).