Utah Truck Speed Limit
No split in Utah. Trucks run the posted limit like everyone else, 75 on most rural interstates and 80 on the raised segments (Utah Code 41-6a-601). The descents into the Salt Lake Valley and off the Wasatch are the real hazard, and they are governed by lower-gear and runaway-ramp signs, not a truck speed limit.
How fast a truck can run in Utah
No split in Utah. Trucks run the posted limit like everyone else, 75 on most rural interstates and 80 on the raised segments (Utah Code 41-6a-601). The descents into the Salt Lake Valley and off the Wasatch are the real hazard, and they are governed by lower-gear and runaway-ramp signs, not a truck speed limit.
Truck-specific rules and quirks
- Utah runs 80 mph on rural stretches of I-15, I-70, I-80, and I-84, and trucks are not held below cars. The steep grades have their own lower-gear and brake-check signs, not a lower speed limit.
What a speeding ticket costs
Speeding is a graduated fine. Work-zone fines double.
Utah Truck Speed Limit FAQ
What is the truck speed limit in Utah?
Do trucks have a lower speed limit than cars in Utah?
What is the speeding penalty for a truck in Utah?
Reference information for planning, not legal advice. Traffic laws change and this can be out of date, so always confirm the current statute and obey posted signs before you rely on it. Last reviewed July 2026. Source: https://www.iihs.org/topics/speed/speed-limit-laws. See our Terms & Disclaimer.
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