Listed below are the USDOT number display regulations for each state. (USDOT Regulations by state). Click on the state your trucking company is in or the states you will be driving through to see US Department of Transportation regulations specific to those states.
To look up your companies USDOT number, use the following link.
https://safer.fmcsa.dot.gov/CompanySnapshot.aspx
For truckers or companies that transport hazardous materials, you can review the following for information regarding the display of hazmat placards.
https://www.fmcsa.dot.gov/regulations/hazardous-materials/hazardous-materials-markings-labeling-and-placarding-guide-dot-chart
Author – Steven Cole (Economics, MBA) – 22 years experience in the reflective safety tape industry.