Displaying your USDOT number is one of the most important things to do as a first time trucker. Here are a few tips to keep in mind.
Your USDOT number must be at least 2 inches in height (or larger) and it must be visible from a distance of 50 feet away. Your USDOT number must also be placed on both sides of your commercial vehicle and you must use an easy to read font. Also the lettering must also contrast with the color of your vehicle. If you have a white truck, then dark lettering is recommended.
See a few tip guidelines below.