We are often asked “how big does my US DOT lettering have to be?”

Your USDOT lettering & other commercial lettering such as MC, CA, KYU, VIN, GVW must be at least 2 inches in height and must be visible from a distance of at least 50 feet. It must be attached to your commercial vehicle in a way that it won’t fall off such as a semi-permanent decal. Your USDOT lettering must contrast with the color of your vehicle. Avoid darker colors on a dark vehicle and vice versa.  

We recommend displaying your lettering in a color that contrasts and is clearly visible. Placing it on the door is common but it can be placed anywhere that is visible. It must be displayed on both sides of the power unit.

If you have any questions, please do not hesitate to contact us. Our customer service reps are read to answer any questions. We look forward to having your business.