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Florida has adopted Sec. 390.21 of the Federal Regulations.
Intrastate motor carriers are required to obtain a US DOT number and display it along with the legal company name on all commercial motor vehicles (CMV’s). A CMV:
This requirement is not limited to “trucking companies”. A motor carrier is any commercial enterprise that uses such vehicles in the furtherance of its business.
The following carriers are not required to obtain a DOT number from Florida:
Carrier profile (MCS-150) updates, including added or deleted equipment or drivers, changes in cargo classification or company officers/owners, or changes in address or phone numbers must be done as they occur, but in all cases is required every two (2) years (§390.19).
All commercial motor carriers (for-hire and private) operating interstate are subject to the marking requirements of 49 CFR 390.21 which requires all CMVs to display, on both sides of the power unit, the US DOT number and the legal name of the business entity that owns or controls the motor carrier operation, or the “doing business as” (DBA) name, as it appears on the Form MCS-150.
Any new or used commercial vehicles added to a motor carrier’s fleet must be identified with the US DOT number and single trade name before being put into service.
The regulations do not require the city, state, or MC number to be displayed on the vehicle.