41 C.F.R. § 102-117.100
HAZMAT restrictions
The Secretary of Transportation prescribes regulations for the safe transport of HAZMAT in intrastate, interstate, and foreign commerce in 49 CFR parts 171 through 180. The Environmental Protection Agency also prescribes regulations on transporting HAZMAT in 40 CFR parts 260 through 266. International, State, and local government rules and regulations also apply to HAZMAT shipments.