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

USDOT Number Requirements in Illinois — Decal Size, Display & Penalties

Operating a commercial vehicle out of Illinois? You are subject to FMCSA federal door-marking rules (49 CFR 390.21) plus a small set of Illinois-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 Illinois State Police (Commercial […]

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

Commercial Vehicle Door Marking Laws in New York — FMCSA + State Rules

New York 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 New York State Police (Commercial Vehicle Enforcement Unit) treats violations on the road. Jump to: […]

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Fluorescent Vinyl example showing vinyl lettering quality and design from Hoosier Decal

Fluorescent Vinyl When to Use Bright Colors

Fluorescent vinyl is engineered to be impossible to ignore. If you run a tow truck, a roadside service van, or a safety-critical operation, fluorescent vinyl lettering is not just a style choice. It is a practical tool. We have been cutting fluorescent vinyl at Hoosier Decal since our early days in Indiana, and the situations […]

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

USDOT Number Requirements in Pennsylvania — Decal Size, Display & Penalties

Operating a commercial vehicle out of Pennsylvania? You are subject to FMCSA federal door-marking rules (49 CFR 390.21) plus a small set of Pennsylvania-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 Pennsylvania State Police (Commercial […]

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

Commercial Vehicle Door Marking Laws in Oregon — FMCSA + State Rules

Oregon 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 Oregon Department of Transportation (Commerce and Compliance Division) treats violations on the road. Jump to: What […]

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ATV with registration decal placement location highlighted per New Hampshire DNR requirements

ATV / Snowmobile Registration Decal Laws in New Hampshire

If you ride an ATV, UTV, side-by-side, or snowmobile in New Hampshire, you need a registration decal issued by the New Hampshire Fish and Game Department 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 cold New England winters […]

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Utility trailer diagram showing VIN sticker and registration plate placement required in Delaware

Trailer Registration & VIN Sticker Placement in Delaware

Buying or registering a trailer in Delaware? Three different stickers and plates need to be in the right places: the federal VIN/MFR plate, the state registration tag, and (if you run commercial) any DOT or company markings. This guide walks through placement, replacement, and what vinyl to use so your markings survive coastal humidity and […]

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Utility trailer diagram showing VIN sticker and registration plate placement required in Wisconsin

Trailer Registration & VIN Sticker Placement in Wisconsin

Buying or registering a trailer in Wisconsin? Three different stickers and plates need to be in the right places: the federal utility trailer VIN lettering/MFR plate, the state registration tag, and (if you run commercial) any DOT or company markings. This guide walks through placement, replacement, and what vinyl to use so your markings survive […]

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Custom irp ifta decal on a vehicle showing design, color, and finish options

IRP and IFTA Decal Requirements

Every multi-state commercial truck driver knows the IRP IFTA decal combination plastered on the cab window or semi truck door lettering, but the requirements behind those stickers trip up a surprising number of operators at weigh stations. Placement rules, renewal windows, and what to do when a decal is lost or damaged all matter when […]

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

Commercial Vehicle Door Marking Laws in Connecticut — FMCSA + State Rules

Connecticut 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 Connecticut Department of Motor Vehicles (Commercial Vehicle Safety Division) treats violations […]

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