USA Triathlon (USAT) sets the competition rules for all USAT-Sanctioned races that involve athletes with permanent disabilities. Currently there are two different divisions.
The International Triathlon Union (ITU) sets the international rule book for Paratriathlon races that are sanctioned by ITU. To see the 2013 ITU competition rules, click here. The paratriathlon specific section begins on page number 47.
For athletes to be eligible to compete in ITU-sanctioned events, each athlete needs to ensure their uniform is compliant with the ITU Uniform rules. To view the 2013 ITU Uniform Rules for Paratriathletes, click here.