---
kind: "unit"
title: "49"
title_heading: "Transportation"
key: "subtA/part40/subpartL"
level: "subpart"
label: "Subpart L"
heading: "Alcohol Screening Tests"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/49/subtA-part40-subpartL"
sections_count: 4
---

# Subpart L — Alcohol Screening Tests

Title 49 C.F.R. — Transportation › Subtitle A — Office of the Secretary of Transportation › Part 40 — Procedures for Transportation Workplace Drug and Alcohol Testing Programs

## Sections

- [§40.241. What are the first steps in any alcohol screening test?](/cfr/49/40.241.md)
- [§40.243. What is the procedure for an alcohol screening test using an EBT or non-evidential breath ASD?](/cfr/49/40.243.md)
- [§40.245. What is the procedure for an alcohol screening test using a saliva ASD or a breath tube ASD?](/cfr/49/40.245.md)
- [§40.247. What procedures does the BAT or STT follow after a screening test result?](/cfr/49/40.247.md)