What Must a Carrier Do Immediately after a Driver Tests Positive or Refuses?

The hours after a motor carrier learns of a verified positive drug test or a refusal are governed by Part 382 and Part 40. The rules set a short list of required steps. The overview of what counts as a refusal is in DOT drug test refusal.

Step 1: Remove the driver right away. On the initial report of a verified positive drug test result, the carrier immediately removes the driver from safety-sensitive functions. It does not wait for the written report or for the result of a split specimen test (49 CFR 40.23(a)). A verified adulterated or substituted result is treated as a refusal, with the same immediate removal (49 CFR 40.23(b)). An alcohol result of 0.04 or higher also means immediate removal (49 CFR 40.23(c)). Part 382 adds that no driver may refuse a required test and no carrier may permit a driver who refused to perform or continue to perform safety-sensitive functions (49 CFR 382.211 and 382.501).

Step 2: Give the driver a SAP list. The carrier gives the driver a list of substance abuse professionals readily available to the driver and acceptable to the carrier, with names, addresses and telephone numbers. The carrier may not charge for the list, and it may provide the list itself or through a C/TPA or other service agent (49 CFR 40.287). This applies to applicants and new employees as well.

Step 3: Report to the Clearinghouse. The MRO reports verified positive, adulterated and substituted results. The carrier reports alcohol results of 0.04 or higher and refusals it determines, by the close of the third business day (49 CFR 382.705). The FMCSA Clearinghouse FAQ explains the system.

Step 4: Keep the driver off duty until return-to-duty is met. The driver may not return to safety-sensitive functions until completing the return-to-duty process in Part 40 Subpart O (49 CFR 40.23(d) and 382.503(a)). The SAP and return-to-duty process covers the evaluation, education or treatment, and the return-to-duty test.

What the rules leave to the carrier. A carrier is not required to provide a SAP evaluation or treatment, or to offer the driver a chance to return (49 CFR 40.289(a)). If it does offer a return, the driver must first complete the SAP's recommendations (49 CFR 40.289(b)). Who pays for SAP services is left to the carrier and driver, and may be governed by labor agreements or health benefits (49 CFR 40.289(c)). Whether to discipline or discharge a driver after a positive test is a company policy decision subject to other laws.

What not to do. The carrier must not alter a test result transmitted by an MRO, BAT or C/TPA (49 CFR 40.23(i)), and it does not delay removal while the driver disputes the result. A request for a split specimen test does not pause the removal.