The program contains a database that records drivers’ drug and alcohol violation information. It is mandatory for carriers, medical review officers (MROs), substance abuse professionals (SAPs), and state driver licensing agencies (SDLAs) to report information on driver drug and alcohol violations to the clearinghouse. The program also requires drivers to provide consent to their employers to access their records. This helps employers make informed hiring decisions and ensures that CMV drivers are not under the influence of drugs or alcohol while on the road.