The FMCSA published the Notice Of Proposed Rule to establish a Commercial Driver’s License Drug and Alcohol Clearinghouse for Truck and Bus Drivers on February 20, 2014.  The deadline to submit comments is on April 21, 2014.

The Clearinghouse is a database that will store controlled substances (drug) and alcohol test results for CDL holders.   It will require that Motor Carrier employers check the Clearinghouse during pre-employment and annually. Others involved in the drug testing industry such as Medical Review Officers (MROs), Substance Abuse Professionals (SAPs), and Laboratories performing Department of Transportation drug tests would report positive results or refusals to test to the National Clearing House.   A driver’s consent is required to perform searches.   A driver who refuses to give consent can still be employed by the motor carrier or bus company but would not be able to perform any safety sensitive tasks such as operating a commercial vehicle.

See:  https://www.federalregister.gov/articles/2014/02/20/2014-03213/commercial-drivers-license-drug-and-alcohol-clearinghouse.