DOT Rule 49 CFR Part 40 Section 40.191 defines specific employee behaviors—such as failing to appear, leaving the site, or tampering with a specimen—that constitute a refusal to take a drug test. This regulation mandates that a refusal is treated as a positive result, requiring immediate removal from safety-sensitive duties. For more details, visit U.S. Department of Transportation . DOT Rule 49 CFR Part 40 Section 40.191
Watch S5ep 191 May 2026
DOT Rule 49 CFR Part 40 Section 40.191 defines specific employee behaviors—such as failing to appear, leaving the site, or tampering with a specimen—that constitute a refusal to take a drug test. This regulation mandates that a refusal is treated as a positive result, requiring immediate removal from safety-sensitive duties. For more details, visit U.S. Department of Transportation . DOT Rule 49 CFR Part 40 Section 40.191