Tire Regulatory Bodies

DOT
The United States Department of Transportation (DOT) is the U.S. governmental body authorized by the U.S. Congress to establish and regulate transportation safety in the United States of America. 

NHTSA
The National Highway and Traffic Safety Administration (NHTSA) is a U.S. government body within the Department of Transportation tasked with regulating automotive safety in the United States. 

UTQG
The Uniform Tire Quality Grading System (UTQG), is a system for comparing the performance of tires, established by the United States National Highway Traffic Safety Administration according to the Code of Federal Regulations 49 CFR 575.104. The UTQG regulation requires labeling of tires for tread wear, traction, and temperature. 

T&RA
The Tire and Rim Association (T&RA) is a voluntary U.S. standards organization to promote the interchangeability of tires and rim and allied parts. Of particular interest, they published key tire dimension standards, key rim contour dimension standards, key tire valve dimension standards, and load / inflation standards. 

ETRTO
The European Tyre and Rim Technical Organization (ETRTO) is the European standards organization "to establish engineering dimensions, load/pressure characteristics and operating guidelines" for tires, rims and valves. It is analogous to T&RA. 

JATMA
The Japanese Automobile Tire Manufacturers Association (JATMA) is the Japanese standards organization for tires, rims anbd valves. It is analogous to T&RA and ETRTO. 

TREAD Act
The Transportation Recall Enhancement, Accountability and Documentation Act (TREAD Act) is a United States federal law that sets standards for testing and the reporting of information related to products involved with transportation such as cars and tires.
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