Does a Louisiana truck need a USDOT number for in-state work?

We could not confirm Louisiana’s rule from its official sources. Ask the Louisiana State Police before assuming you are exempt.

Checked against Louisiana’s official sources in September 2026.

The rule in Louisiana

Who it covers: Carriers using vehicles over 26,000 lb "in commerce or industry" (private and for-hire), plus any carrier hauling hazardous materials or operating vehicles designed or used to carry 16 or more people (LAC 33:V § 10305(A)-(B)).

The weight line: Louisiana's adopted federal motor carrier safety rules reach in-state-only trucks when the truck or combination weighs, or is rated, more than 26,000 lb and is used in commerce or industry. For those carriers, every 10,000 lb reference in the federal rules is read as 26,000 lb.

“the federal motor carrier safety regulations ... shall also govern all carriers ... not subject to the federal regulations, if the operated vehicle has a single or combined gross vehicle weight or gross vehicle weight rating, greater than 26,000 pounds and is used in commerce or industry.” source

The rule: La. Admin. Code tit. 33, pt. V, §§ 10303-10305 (promulgated under La. R.S. 32:1501 et seq.)

Who to ask: Louisiana State Police, Transportation Safety Services - Motor Carrier Safety Unit (safety rules); Louisiana Public Service Commission (intrastate operating authority for certain carriers)

Safety rules for in-state trucks

Louisiana makes 49 CFR Parts 355-397 (including 382, 383, 385, 387 and 390-397) part of its rules, 'revised as of January 1, 2021 ... as now in effect or as hereafter amended'. For intrastate carriers not subject to the federal rules, they apply above 26,000 lb. (LAC 33:V § 10303(A), § 10305(B)-(C))

For intrastate carriers brought in by the 26,000 lb rule, every 10,000 lb reference in the federal rules is read as 26,000 lb.
Drivers may be 18 if they hold an appropriately classified Louisiana license.
The Louisiana Public Service Commission issues intrastate authority to certain carrier types, including carriers of waste and of household goods.

The federal lines, which apply in Louisiana too

10,001 lb and interstate commerce: a USDOT number, a medical card, a driver qualification file, the hours-of-service rules and daily inspections (49 CFR 390.5).
26,001 lb: a CDL, for a single vehicle or a combination towing more than 10,000 lb (383.5). The CDL rules cover in-state driving as well (383.3), and drug and alcohol testing follows the CDL (382.103).

Check your own truck and trailer

Questions

Does Louisiana require a USDOT number for intrastate trucks?

We could not confirm Louisiana’s rule from its official sources. Ask the Louisiana State Police before assuming you are exempt.

What is the CDL weight in Louisiana?

The same as everywhere: 26,001 lb for a single vehicle, or a combination of 26,001 lb towing more than 10,000 lb. The federal CDL rules apply to in-state driving too (49 CFR 383.3), and drug and alcohol testing follows the CDL (382.103).

Who administers the rule in Louisiana?

Louisiana State Police, Transportation Safety Services - Motor Carrier Safety Unit (safety rules); Louisiana Public Service Commission (intrastate operating authority for certain carriers).

What we could not confirm

We found no Louisiana statement either way on in-state USDOT numbers, and Louisiana is not on FMCSA's list. Louisiana adopts the federal rules, which contain the registration requirement, for in-state vehicles over 26,000 lb, but does not say whether the registration part applies.
The Public Service Commission licenses waste and household-goods carriers; its application packets do not mention a USDOT number, and whether a junk-removal or roll-off business counts as a waste carrier was not determined.

Sources

General information, not legal advice. It summarises Louisiana’s published rules as read in September 2026; confirm with the Louisiana State Police or FMCSA.