Washington, D.C. — The U.S. Department of Transportation announced it will file amendments to the Federal Register on Nov. 5, 2026 that tighten the rules for oral‑fluid drug testing in the transportation sector.
The move follows a series of stalled attempts to make saliva samples a viable alternative to urine in DOT‑mandated drug screens. Trucking firms have pressed for a faster, less invasive method, but the rollout has been hampered by gaps in laboratory certification and uncertainty over who may observe the collection process. Until those issues are resolved, FMCSA regulations continue to rely on urine testing alone.
DOT first cleared the path in May 2023, adding oral fluid as an optional specimen type without discarding the existing urine requirement. A direct final rule issued in June sought to define mock‑collection observers, privacy safeguards, and volume‑verification procedures. After receiving a wave of adverse comments, the agency withdrew the rule in August and pledged to revisit stakeholder concerns. The upcoming Nov. 5 filing will establish interim qualifications for mock oral‑fluid monitors, clarify who may be present during collection, and set a standard for recording sufficient sample volume. As of Oct. 1, 2026, the U.S. Department of Health and Human Services has not certified any laboratory for oral‑fluid analysis, and a separate notice on hair‑testing integration remains pending.
What This Means for Drivers
CDL‑A drivers and owner‑operators should not expect to see saliva swabs on the road until a certified lab is approved and carriers receive updated compliance guidance. Fleet managers will need to train personnel on the new mock‑observer qualifications once the rule is final, which could add a few weeks to the onboarding schedule. OTR truck driver crews can anticipate a smoother testing experience once oral fluid becomes an option, but they must continue to schedule urine tests to stay compliant with current FMCSA regulations.
Industry Reaction
Trucking associations have welcomed the clarification but warn that the lack of certified labs leaves the industry in limbo. A spokesperson for the American Trucking Associations said the DOT’s incremental approach shows commitment to safety while acknowledging practical constraints. Individual carriers, especially those hiring aggressively, are watching the timeline closely because a faster, less invasive test could reduce downtime and improve driver satisfaction, a key factor as trucking companies hiring intensifies.
Key Points
- May 2023 rule allowed oral fluid as an optional DOT drug‑test specimen.
- June 2023 direct final rule attempted to set observer and privacy standards.
- August 2023 withdrawal followed a flood of adverse stakeholder comments.
- Nov. 5, 2026 amendment will define mock‑monitor qualifications, observer limits, and volume‑recording methods.
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