TxDOT's administrative rules are developed to enforce department policy and procedure outside the agency. Publication of proposed actions and a public comment period are the major components of the rulemaking process. TxDOT's administrative rules are part of the Texas Administrative Code.

Following approval by the Texas Transportation Commission, proposed rules are published in the Texas Register. Members of the public may provide input during the comment period. TxDOT evaluates and responds to the comments, and commission members consider public input before approving the final version of the rules. Once the final rule is adopted by the commission, it is submitted to the Texas Register for publication.