DOT signs - door signs

What Are DOT Door Signs?

DOT door signs are special decals placed on the doors of trucks. They show important information about the company that owns or operates the vehicle, including the company name, the USDOT number, and sometimes other details like Gross Vehicle Weight (GVW) or Motor Carrier (MC) number, depending on what kind of job you do.

If your truck crosses state lines or moves goods between states for business, you’re required by law to have these signs on your truck. This rule comes from the Federal Motor Carrier Safety Administration (FMCSA) and the U.S. Department of Transportation (DOT).

These rules apply to many vehicles, not just big semi trucks. Even smaller business vehicles may need USDOT stickers if they meet the weight or commercial use guidelines.

In short, there are not just for looks, it is legal requirement. They help identify your business, show that you are registered and prove that your vehicle is operating safely and legally.

Key DOT Truck Signage Requirements

Visibility and Placement

Your DOT door signs need to be easy to see. The general rule is that the letters or dot numbers on your USDOT sticker must be at least 2 inches tall, and placed on both sides of the truck.Most often, they are put on entry doors.

But it’s not just about size. The DOT decals must be placed on a clean, flat surface where they’re not blocked by any part of the vehicle.

Regular decals can be seriously damaged by the weather. That’s why DOT decals for trucks are made from strong and  durable materials. Vinyl is the most common choice because it resists rain, wind, and sunlight. Cheap stickers might peel or fade, and if your sign becomes unreadable, it’s as bad as not having one at all.

Your DOT numbers stickers must be clear and legible. That means using plain fonts (like Arial), avoiding script or decorative styles, and choosing a high contrast color,  usually black on a white or light background. You can use free tools, to check contrast. These tools show if the text and background colors are easy to see for everyone, including people with vision problems.

Following the proper DOT truck signage requirements isn’t just about avoiding fines. It shows that your company is responsible, professional, and fully legal. Think of your DOT decal like a badge or personal document, it will represent your business on the road.

A man is applying DOT signs to the truck door

Why choose us to make your DOT signs?

We print DOT signs for trucks that follow all the rules. Our signs are 100% compliant with federal and state laws, so you don’t have to worry about fines or problems. We work fast and ship quickly, so you get your US DOT stickers when you need them. Customizing your DOT decals for trucks is easy,  just contact with us, and we print clear, correct signs for you. Trucking companies all over the country trust us because we deliver good quality and rapid service every time.

Have Questions?

If you have questions about your DOT sticker for trucks or even about DOT signs for trucks, contact our support team anytime. We’re ready to help you with anything you need.

Check our other services:
Trailer signs
Fleet graphics