Uniform tire quality grading (UTQG) is a series of results set by the U.S. Department of Transportation's National Highway Traffic Safety Administration to measure a tire's treadwear, traction and temperature. UTQG standards are not tested by the U.S. DOT but by tire manufacturers. However, if inconsistencies are detected in a manufacturer's results, the National Highway Traffic Safety Administration can independently test each tire to ensure proper grading. These ratings can be found on any sidewall of a tire or on the doorjamb placard.