US DOT Number Basic Regulations

USDOT Must Be 2 Inches In Height

2 inches is the bare minimum. Bigger is always better.

USDOT Decal Must Contrast In Color

Your Usdot number must easily contrast with the color of your vehicle.

Visible From 50Feet Away

50 feet or it’s not compliant.

USDOT Display On Both Sides

Your number mustbe on both sides of your vehicle.


us dot number basic regulations