US DOT Number Magnetic Signs

USDOT magnets may be used on commercial vehicles as long as the required company name, USDOT number, and other markings are clearly displayed, legible, and visible on both sides of the vehicle.

Most commercial vehicles must display the legal company name or trade name and USDOT number. Some carriers may also need to display an MC number, depending on their operating authority. Markings should be legible, in contrasting colors, and visible from 50 feet during daylight hours.

FMCSA regulations require vehicle markings to be legible from 50 feet during daylight hours. While regulations do not specify a minimum letter height, many carriers choose lettering that is at least 2 inches tall to help ensure visibility and compliance.

Not every carrier is required to display an MC number. Requirements vary based on operating authority and business type. Many interstate carriers choose to display both their USDOT number and MC number on their vehicle markings.

No. Magnetic signs only adhere to steel surfaces. They will not stick properly to aluminum, fiberglass, plastic, or heavily contoured vehicle panels.

Place a household magnet on the area where you plan to install the USDOT magnet. If the magnet sticks firmly, the surface is likely compatible with magnetic signs.

Commercial vehicle markings are typically required on both sides of the power unit. Most customers order a pair of USDOT magnets so both sides of the truck display the required information.

Yes. Custom USDOT magnets can include your company logo, trade name, USDOT number, MC number, and other business information.

USDOT magnets can be removed and transferred between compatible vehicles, while vinyl decals provide a permanent application. Magnets are often preferred for leased, rental, and temporary-use vehicles, while decals are ideal for permanently marked vehicles.

When properly installed and maintained, magnetic signs generally do not damage factory paint. Remove and clean magnets periodically to prevent moisture and debris buildup between the magnet and vehicle surface.

Yes. USDOT magnets can be transferred between compatible vehicles with flat steel surfaces, making them a popular choice for leased vehicles, rental trucks, owner-operators, and fleet vehicles.

The best size depends on the amount of information being displayed. Many customers choose larger magnets for company names, USDOT numbers, and MC numbers, while smaller layouts may work for basic vehicle identification.

Yes. Reflective USDOT magnets are available for customers who want increased visibility in low-light conditions or at night.

The lifespan of a USDOT magnet depends on use, weather exposure, cleaning, and storage. With proper care, premium magnetic signs can provide years of service.

Install USDOT magnets on a clean, dry, flat steel surface. Remove them periodically to clean both the vehicle surface and the back of the magnet, especially after rain, washing, or extended outdoor use.