What does the DOT marking on tires represent?

[DeKinsley]

DOT is the abbreviation for the U.S. Department of Transportation, a government agency responsible for transportation regulation. The presence of 'DOT' on a tire indicates that the tire complies with the safety standards set by the U.S. Department of Transportation. Here is some information about DOT: 1. DOT is the U.S. government agency for transportation management, established in 1967, with nine sub-agencies including the U.S. Coast Guard, Federal Aviation Administration, Federal Highway Administration, Federal Railroad Administration, National Highway Traffic Safety Administration, Federal Transit Administration, Saint Lawrence Seaway Development Corporation, Maritime Administration, and the Office of the Secretary. 2. According to U.S. law, all tires sold in the U.S. market must pass DOT testing and have the DOT marking molded on the tire sidewall after certification. Tires without the DOT marking are prohibited from being imported, manufactured, or sold in the U.S. market.