US DOT, MC & all regulation numbers should be minimum of 2” inches in height with a visibility of at least 50 feet away. The lettering should contrast with the color of the vehicle. If your vehicle is white, then go for a dark color. If your vehicle is black, go for a light color. It is important for your lettering to be clearly visible for US Department of Transportation Inspectors or whenever you’re pulled over by authorities.
At USDOT Truck Lettering, all of our products are 100% DOT Compliant & Proudly Made in America.