USDOT lettering information
Check the requirements that apply to your operation before ordering. The design, placement, contrast and readability of vehicle identification matter; choosing a sticker width alone does not establish compliance.
Requirements can vary depending on your operation and jurisdiction. Verify current requirements with the appropriate regulatory authority. See the FMCSA Motor Carrier Safety Planner for official guidance.
Source: https://csa.fmcsa.dot.gov/SafetyPlanner/MyFiles/SubSections.aspx?ch=21&eta=62708&sec=59&sub=114
Requirements can vary depending on your operation and jurisdiction. Verify current requirements with the appropriate regulatory authority. See the FMCSA Motor Carrier Safety Planner for official guidance.
Source: https://csa.fmcsa.dot.gov/SafetyPlanner/MyFiles/SubSections.aspx?ch=21&eta=62708&sec=59&sub=114