49 CFR § 655.51 - Compliance with testing procedures requirements.

---
identifier: "/us/cfr/t49/s655.51"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "49 CFR § 655.51 - Compliance with testing procedures requirements."
title_number: 49
title_name: "Transportation"
section_number: "655.51"
section_name: "Compliance with testing procedures requirements."
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"
---


# 655.51 Compliance with testing procedures requirements.

The drug and alcohol testing procedures in 49 CFR Part 40 apply to employers covered by this part, and must be read together with this part, unless expressly provided otherwise in this part.