Commercial Motor Vehicle English Proficiency Act

This bill requires commercial motor vehicle drivers to demonstrate English proficiency to pass knowledge tests or receive certification. Starting two years after enactment, drivers must understand English traffic signs, communicate with safety officers (like border patrol), and exchange directions in English while operating vehicles. It bans administering these tests in any language other than English and mandates the Transportation Secretary to update related regulations within two years. The law directly affects commercial drivers seeking certification or renewing licenses under federal rules.