Wyoming Truck Speed Limit
No split in Wyoming. Trucks run the same posted limit as cars, 75 on most rural interstates and 80 on segments the state has raised (Wyo. Stat. 31-5-301). What stops you here is not the limit, it is wind and ice on I-80, which closes to high-profile vehicles more often than any road in the country.
How fast a truck can run in Wyoming
No split in Wyoming. Trucks run the same posted limit as cars, 75 on most rural interstates and 80 on segments the state has raised (Wyo. Stat. 31-5-301). What stops you here is not the limit, it is wind and ice on I-80, which closes to high-profile vehicles more often than any road in the country.
Truck-specific rules and quirks
- Wyoming posts 80 mph on long stretches of I-25 and I-80 by traffic study, and trucks run it too. Wind and winter closures on I-80 matter far more here than the limit.
What a speeding ticket costs
Speeding is a graduated fine set by the court. Work-zone fines increase.
Wyoming Truck Speed Limit FAQ
What is the truck speed limit in Wyoming?
Do trucks have a lower speed limit than cars in Wyoming?
What is the speeding penalty for a truck in Wyoming?
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 Traffic laws change and this can be out of date, so always confirm the current statute and obey posted signs before you rely on it.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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