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USDOT decal placement diagram for Kentucky commercial trucks showing FMCSA letter sizing rules

USDOT Number Requirements in Kentucky β€” Decal Size, Display & Penalties

Operating a commercial vehicle out of Kentucky? You are subject to FMCSA federal door-marking rules (49 CFR FMCSA marking requirements) plus a small set of Kentucky-specific requirements for your USDOT decal. This page walks you through legal sizing, font, placement, and the most common reasons fleets get flagged at roadside inspections by the Kentucky State […]

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USDOT decal placement diagram for Washington commercial trucks showing FMCSA letter sizing rules

USDOT Number Requirements in Washington β€” Decal Size, Display & Penalties

Operating a commercial vehicle out of Washington? You are subject to FMCSA federal door-marking rules (49 CFR 390.21) plus a small set of Washington-specific requirements for your USDOT decal. This page walks you through legal sizing, font, placement, and the most common reasons fleets get flagged at roadside inspections by the Washington State Patrol (Commercial […]

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Charter boat hull showing USCG documentation number placement requirements for Texas vessels

Fishing-Charter & Livery-Vessel Marking Rules in Texas

If you operate a fishing-charter or livery vessel in Texas, your boat carries three layers of markings: USCG documentation or state registration numbers, a state validation decal from the Texas Parks and Wildlife Department, and any commercial / livery identifiers. This guide explains the rules, sizing, placement, and what vinyl survives intense Texas sun and […]

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Charter boat hull showing USCG documentation number placement requirements for Maine vessels

Fishing-Charter & Livery-Vessel Marking Rules in Maine

If you operate a fishing-charter or livery vessel in Maine, your boat carries three layers of markings: USCG documentation or state registration numbers, a state validation decal from the Maine Department of Inland Fisheries and Wildlife, and any commercial / livery identifiers. This guide explains the rules, sizing, placement, and what vinyl survives harsh coastal […]

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USDOT decal placement diagram for Minnesota commercial trucks showing FMCSA letter sizing rules

USDOT Number Requirements in Minnesota β€” Decal Size, Display & Penalties

Operating a commercial vehicle out of Minnesota? You are subject to FMCSA federal door-marking rules (49 CFR 390.21) plus a small set of Minnesota-specific requirements for your USDOT decal. This page walks you through legal sizing, font, placement, and the most common reasons fleets get flagged at roadside inspections by the Minnesota State Patrol (Commercial […]

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ATV with registration decal placement location highlighted per South Carolina DNR requirements

ATV / Snowmobile Registration Decal Laws in South Carolina

If you ride an ATV, UTV, side-by-side, or snowmobile in South Carolina, you need a registration decal issued by the South Carolina Department of Natural Resources and applied where it can be read from a distance. This guide covers placement, sizing, replacement options, and how to keep your decal legible through humid coastal climate. Jump […]

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Commercial truck door with required FMCSA markings showing name, USDOT number, and address for Maryland

Commercial Vehicle Door Marking Laws in Maryland β€” FMCSA + State Rules

Maryland commercial fleets must follow FMCSA 49 CFR FMCSA marking requirements semi truck door lettering-marking rules plus any state-specific intrastate add-ons. This guide explains what has to appear on the door, how big it has to be, where to place it, and how the Maryland State Police (Commercial Vehicle Enforcement Division) treats violations on the […]

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USDOT decal placement diagram for Massachusetts commercial trucks showing FMCSA letter sizing rules

USDOT Number Requirements in Massachusetts β€” Decal Size, Display & Penalties

Operating a commercial vehicle out of Massachusetts? You are subject to FMCSA federal door-marking rules (49 CFR FMCSA marking requirements) plus a small set of Massachusetts-specific requirements for your USDOT decal. This page walks you through legal sizing, font, placement, and the most common reasons fleets get flagged at roadside inspections by the Massachusetts State […]

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USDOT decal placement diagram for Iowa commercial trucks showing FMCSA letter sizing rules

USDOT Number Requirements in Iowa β€” Decal Size, Display & Penalties

Operating a commercial vehicle out of Iowa? You are subject to FMCSA federal door-marking rules (49 CFR 390.21) plus a small set of Iowa-specific requirements for your USDOT decal. This page walks you through legal sizing, font, placement, and the most common reasons fleets get flagged at roadside inspections by the Iowa Department of Transportation […]

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Commercial truck door with required FMCSA markings showing name, USDOT number, and address for Maine

Commercial Vehicle Door Marking Laws in Maine β€” FMCSA + State Rules

Maine commercial fleets must follow FMCSA 49 CFR 390.21 door-marking rules plus any state-specific intrastate add-ons. This guide explains what has to appear on the door, how big it has to be, where to place it, and how the Maine State Police (Commercial Vehicle Enforcement Unit) treats violations on the road. Jump to: What must […]

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