An employer must query the FMCSA Drug and Alcohol Clearinghouse before hiring a driver (a full query with the driver's electronic consent) and at least once a year for every employed CDL driver (a limited query with written or electronic consent, followed by a full query within 24 hours if information exists), and may not permit a driver with a prohibited status in the Clearinghouse to perform safety-sensitive functions. The employer and its service agents must report to the Clearinghouse within three business days each verified positive, adulterated or substituted test, each alcohol result of 0.04 or greater, each refusal, each actual knowledge violation, each negative return-to-duty result and each completion of follow-up testing. Employers must register in the Clearinghouse, keep query records for three years, and the MRO and SAP report their respective determinations. Drivers must register to respond to full-query consent requests.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.