This bill introduces significant changes to the requirements for obtaining and renewing commercial driver's licenses (CDLs). A primary provision mandates that all testing related to the issuance or renewal of a CDL must be administered only in English . This includes knowledge tests, tests for entry-level driver training programs, and those conducted by third-party training providers, with the Secretary of Transportation required to issue new or revised regulations within 180 days to ensure compliance. Furthermore, the legislation establishes a new prerequisite for CDL applicants, requiring them to have held a standard driver's license for a minimum of one year before they can be issued a commercial driver's license, though this does not apply to individuals already holding a CDL. The bill also grants the Secretary of Transportation the authority to revoke a state's ability to issue non-domiciled commercial driver's licenses or commercial learner's permits if the state fails to comply with these new federal standards and regulations.