49 CFR § 655.47 - Follow-up testing after returning to duty.

---
identifier: "/us/cfr/t49/s655.47"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "49 CFR § 655.47 - Follow-up testing after returning to duty."
title_number: 49
title_name: "Transportation"
section_number: "655.47"
section_name: "Follow-up testing after returning to duty."
chapter_name: "FEDERAL TRANSIT ADMINISTRATION, DEPARTMENT OF TRANSPORTATION"
part_number: "655"
part_name: "PREVENTION OF ALCOHOL MISUSE AND PROHIBITED DRUG USE IN TRANSIT OPERATIONS"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "49 U.S.C. 5331 (as amended); 49 CFR 1.91"
regulatory_source: "66 FR 42002, Aug. 9, 2001, unless otherwise noted."
cfr_part: "655"
---


# 655.47 Follow-up testing after returning to duty.

An covered employer shall conduct follow-up testing of each employee who returns to duty, as specified in 49 CFR Part 40, subpart O.

[66 FR 42002, Aug. 9, 2001, as amended at 88 FR 27653, May 2, 2023]