49 CFR § 40.325 Procedures for Transportation Workplace Drug and Alcohol Testing Programs§ 40.325 [Reserved]Current through Sep 25, 2026 · Read all of Part 40⚠ 1 pending change to Part 40Petition for Rulemaking; Notification of Petition for Rulemaking; Invalid Specimen DeterminationsProposed Rule · comments close Nov 2, 2026 · Transportation Department