49 C.F.R. § 382.111
Other requirements imposed by employers.
Cite as 49 C.F.R. § 382.111 (2026)
Except as expressly provided in this part, nothing in this part shall be construed to affect the authority of employers, or the rights of drivers, with respect to the use of alcohol, or the use of controlled substances, including authority and rights with respect to testing and rehabilitation.