For ordinary business property transport, the answer depends on interstate versus intrastate commerce and the vehicle's weights. Covered interstate trucks need the operating carrier's name and USDOT number. Florida also applies federal marking rules to covered intrastate vehicles, but its lighter-intrastate exemption can remove that duty. [1–3]
This guide covers ordinary property-carrying trucks and truck/trailer combinations. Passenger service, placarded hazardous materials, towing, household-goods moving and other specially regulated work need an additional review. The agricultural identification rule below is a specific exception, not a general farm exemption.
Quick check
| Your situation | Marking answer |
|---|---|
| Interstate business property transport; the greatest applicable GVWR, GCWR, actual vehicle weight or actual combination weight is at least 10,001 lb | Unless an applicable exception applies, display the operating carrier's recorded name and USDOT number on both sides of the power unit. |
| Solely intrastate ordinary property transport; actual gross vehicle weight, GVWR and GCWR are all below 26,001 lb; no placard-required hazardous materials | Section 316.302(2)(f) exempts this operation from subsection (1), including its adopted Part 390 marking duty. This is not an exemption from every vehicle or business rule. |
| Solely intrastate ordinary property transport; one of those three measures is 26,001 lb or more | The lighter-vehicle exemption is unavailable. A covered CMV must follow the adopted name/USDOT marking rule unless another exception applies. |
| Qualifying intrastate agricultural transport under section 316.302(2)(e) | A separate name-and-base-town marking applies when the vehicle/combination has gross weight of at least 26,001 lb or the power unit has at least three axles. |
Sources: [1–3]. A trailer can change the applicable combination rating. Do not use the pickup's door-label rating alone to decide the combination's status.
Check the operation before the weight
Interstate commerce includes a trip that stays within Florida when it forms part of transportation originating or ending outside Florida. A local delivery leg of an interstate shipment can therefore fall under the federal rules. Carrying your own business's goods or equipment can also be commercial carriage; a separate hauling fee is not necessary. [2]
For the lighter-intrastate exemption, the statute lists gross vehicle weight, gross vehicle weight rating and gross combined weight rating. All three must be below 26,001 lb. An empty vehicle with a 33,000-lb rating does not qualify merely because today's load is light. If a combination rating is unknown, establish it before relying on the exemption. [1]
What a covered truck must display
The ordinary USDOT marking consists of:
- The operating motor carrier's legal name or one trade name recorded with FMCSA.
- Its assigned identification number, preceded by USDOT.
Put the required identification on both sides of the self-propelled vehicle. Use sharply contrasting lettering that is readable in daylight from 50 feet while the vehicle is stationary, and keep it legible. Paint and removable markings are both permitted when they satisfy the rule. When another person's name appears, the operating carrier identification needs the applicable operated by wording. [3]
The federal marking provision sets a readability requirement, not a universal two-inch minimum. Choose the font, height, contrast and placement together; two-inch lettering alone is not proof of compliance. Florida's intrastate adoption uses the federal rules as they existed on December 31, 2023. The marking provisions reviewed in that edition contain the same ordinary name, number, placement and readability requirements described here. [1, 3, 4]
The agricultural exception still has an identification rule
Section 316.302(2)(e) covers specified intrastate movements of agricultural products, including horticultural and forestry products, from the farm or harvest location to the first processing/storage location or directly to market. It does not cover every journey made by a farm business. [1]
For a vehicle/combination operated under that paragraph with gross weight of 26,001 lb or more, or a power unit with three or more axles regardless of weight, display the vehicle owner's or motor carrier's name and the municipality or town where the vehicle is based. Put that information on each side of the power unit, in contrasting letters readable from 50 feet. The paragraph does not prescribe an inch height. [1]
Frequently asked questions
Does a Florida-only 20,000-lb truck need USDOT lettering?
For ordinary non-hazardous property transport, it can qualify for the lighter-intrastate exemption if actual gross weight, GVWR and GCWR are all below 26,001 lb and the commerce is solely intrastate. A 20,000-lb actual weight alone does not settle the answer. [1]
Do I need a separate FDOT-number decal?
The ordinary identification rule discussed here uses the carrier's USDOT number. These provisions do not create an additional FDOT-number lettering requirement for the covered ordinary operation. Separate permits, official credentials and special-operation markings need their own assessment. [1, 3]
Does a trailer change the answer?
It can. Check the combination rating and relevant actual weights, not just the towing vehicle's GVWR. The federal GCWR definition includes a method using the power unit and towed units; it is not always simply a marketing tow-capacity figure. [2]
If I qualify for the lighter exemption, are all safety rules waived?
No. Section 316.302(2)(f) expressly retains specified safety provisions even though it exempts the operation from subsection (1). This guide determines the ordinary marking consequence only. [1]
Can I use magnetic signs or a rental truck's existing lettering?
Removable signs can satisfy the ordinary rule if they meet the identification and legibility requirements. A rental of 30 days or less has a separate documentation-and-marking alternative; the rental company's name alone is not enough to establish that alternative. Check the full rental provision before relying on it. [3]
Before ordering
Confirm your commerce type, all relevant weights and ratings, operating carrier name and assigned number. If the ordinary exemption applies and no separate marking rule applies to your work, these provisions do not require a USDOT lettering purchase. If identification is required, measure both intended mounting areas and choose a readable layout.
Review federal USDOT marking requirements · Browse name and USDOT lettering · Lettering questions
Sources and review
Research checked October 11, 2026. The current federal source displayed Title 49 as updated through October 7, 2026. Scope: ordinary property-carrier identification and the agricultural paragraph described above. General information, not an individual compliance determination.
- Florida Statutes 316.302, especially (1)(a)–(b), (2)(e)–(f). See also 316.003(14) for Florida's CMV definition.
- 49 CFR 390.5T, CMV, GCWR and commerce definitions; 390.3T, applicability and exceptions.
- 49 CFR 390.21T, especially (a)–(e).
- 2023 annual CFR, Title 49 Volume 5, printed pages 448–450, section 390.21T. The current section's amendment history identifies the last amendment as August 14, 2019.