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

Yes. Florida requires a USDOT number for in-state commercial vehicles at 26,001 lb and over (exempt only if the actual weight, GVWR and GCWR are all under it), even if they never cross a state line.

Checked against Florida’s official sources in September 2026.

The rule in Florida

Who it covers: All owners and drivers of commercial motor vehicles in intrastate commerce (for-hire and private), subject to the exemptions in § 316.302(2).

The weight line: An intrastate-only truck not hauling placarded hazmat is exempt from Florida's adopted federal rules, including USDOT registration, only if its actual weight, GVWR and GCWR are all under 26,001 lb. At 26,001 lb or more a USDOT number is required. Exempt vehicles must still follow Parts 382, 392, 393 and parts of 396.

Exemptions the state lists:

Intrastate vehicles under 26,001 lb (GVW, GVWR and GCWR) not hauling placarded hazmat: exempt from § 316.302(1), but must follow 49 CFR 382, 392, 393 and §§ 396.3(a)(1), 396.9
Intrastate transport of agricultural, horticultural or forestry products from farm/harvest place to first processing, storage or market (limited compliance still required)
Covered farm vehicles: exempt from Parts 382, 383, 391 Subpart E, 395 and 396 under stated conditions
Exceptions in 49 CFR 390.3(f) (cited by FLHSMV)

“By law, your company is required to register for a USDOT Number and display it on all your commercial motor vehicles (CMVs) power units and intermodal equipment chassis.” source

“A person who operates a commercial motor vehicle having a gross vehicle weight, gross vehicle weight rating, and gross combined weight rating of less than 26,001 pounds solely in intrastate commerce ... is exempt from subsection (1).” source

The rule: Fla. Stat. § 316.302(1)(b) (intrastate carriers subject to 49 CFR 382-386 and 390-397) and § 316.302(2)(f) (under-26,001 lb exemption); penalty for failing to register at § 316.3025(3)(d)

Who to ask: Florida Department of Highway Safety and Motor Vehicles (FLHSMV), Florida Highway Patrol, Office of Commercial Vehicle Enforcement

Safety rules for in-state trucks

Owners and drivers of commercial motor vehicles in intrastate commerce are subject to 49 CFR Parts 382-386 and 390-397 as they existed on December 31, 2023, except as the statute provides. (Fla. Stat. § 316.302(1)(b))

Intrastate drivers not hauling placarded hazmat need not meet the federal minimum-age rule (21) or the federal hours limit in 395.3. Florida separately bars drivers under 18 from commercial motor vehicles (with a farm exception).
Intrastate drivers may drive up to 12 hours after 10 hours off duty, not after the 16th hour on duty, with a 70/80-hour weekly cap.
Intrastate drivers within a 150 air-mile radius of their base can skip logs (395.8/395.11) if the federal short-haul conditions in 395.1(e)(1)(iii)-(iv) are met.
Florida adopts the federal rules as of a fixed date (December 31, 2023) for intrastate carriers, while interstate carriers follow the current federal rules.

The federal lines, which apply in Florida 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 Florida require a USDOT number for intrastate trucks?

Yes. Florida requires a USDOT number for in-state commercial vehicles at 26,001 lb and over (exempt only if the actual weight, GVWR and GCWR are all under it), even if they never cross a state line.

What is the CDL weight in Florida?

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 Florida?

Florida Department of Highway Safety and Motor Vehicles (FLHSMV), Florida Highway Patrol, Office of Commercial Vehicle Enforcement.

What we could not confirm

The state's USDOT page describes the exemption as a declared weight under 26,001 lb, but the statute requires the actual weight, the GVWR and the GCWR all to be under it. This page follows the statute.
The weight at which Florida's remaining rules (Parts 382, 392, 393 and 396) start to apply to lighter trucks was not confirmed.

Sources

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