Louisiana Truck Speed Limit
No split. Trucks run the same limit as cars. Most interstates are 70 (La. R.S. 32:61). One stretch runs 75, about 200 miles of I-49 between Opelousas and Shreveport, raised by DOTD after an engineering study. Other divided highways top out at 70.
How fast a truck can run in Louisiana
No split. Trucks run the same limit as cars. Most interstates are 70 (La. R.S. 32:61). One stretch runs 75, about 200 miles of I-49 between Opelousas and Shreveport, raised by DOTD after an engineering study. Other divided highways top out at 70.
Truck-specific rules and quirks
- The only 75 mph zone is roughly 200 miles of I-49 between Opelousas and Shreveport, raised by DOTD after an engineering study under a 2010 law. Everything else tops at 70.
What a speeding ticket costs
Graduated fine, varies by parish court. Work-zone fines double when workers are present.
Louisiana Truck Speed Limit FAQ
What is the truck speed limit in Louisiana?
Do trucks have a lower speed limit than cars in Louisiana?
What is the speeding penalty for a truck in Louisiana?
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 Traffic laws change and this can be out of date, so always confirm the current statute and obey posted signs before you rely on it.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://legis.la.gov/legis/Law.aspx?d=88480. See our Terms & Disclaimer.
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