Texas Truck Speed Limit
No split. Texas killed its lower truck limit and its nighttime limit in 2011 (HB 1353), so trucks run the same posted number as cars (Tex. Transp. Code 545.353). Most rural interstates are 75. You will see 80 on I-10 and I-20 in west Texas and 85 on the SH 130 toll road between Austin and Seguin, the highest posted limit in the US. In a work zone with workers present the fine doubles and can hit $2,000.
How fast a truck can run in Texas
No split. Texas killed its lower truck limit and its nighttime limit in 2011 (HB 1353), so trucks run the same posted number as cars (Tex. Transp. Code 545.353). Most rural interstates are 75. You will see 80 on I-10 and I-20 in west Texas and 85 on the SH 130 toll road between Austin and Seguin, the highest posted limit in the US. In a work zone with workers present the fine doubles and can hit $2,000.
Truck-specific rules and quirks
- Left lane is posting-restricted to passing on many rural interstates; minimum speeds posted where signed
- Night limit: None. Texas repealed its 65 mph nighttime limit in 2011 (HB 1353)
- Some metro interstates keep trucks out of the left lane by posted sign, not by speed
- 80 mph runs on I-10 and I-20 in west Texas; 85 mph on the SH 130 toll road between Austin and Seguin, the highest posted limit in the country. Fleet governors (65-68) often keep you under the posted max.
What a speeding ticket costs
Ordinary speeding is a graduated fine set by local JP courts and varies by county. In a work zone with workers present the fine doubles and can reach $2,000.
Texas Truck Speed Limit FAQ
What is the truck speed limit in Texas?
Do trucks have a lower speed limit than cars in Texas?
What is the speeding penalty for a truck in Texas?
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 Traffic laws change and this can be out of date, so always confirm the current statute and obey posted signs before you rely on it.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://statutes.capitol.texas.gov/Docs/TN/htm/TN.545.htm. See our Terms & Disclaimer.
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