49 C.F.R. § 172.701 Federal-State relationship.
Title 49 - Transportation
This subpart and the parts referenced in §172.700(c) prescribe minimum training requirements for the transportation of hazardous materials. For motor vehicle drivers, however, a State may impose more stringent training requirements only if those requirements— (a) Do not conflict with the training requirements in this subpart and in part 177 of this subchapter; and (b) Apply only to drivers domiciled in that State.
Title 49: Transportation
PART 172—HAZARDOUS MATERIALS TABLE, SPECIAL PROVISIONS, HAZARDOUS MATERIALS COMMUNICATIONS, EMERGENCY RESPONSE INFORMATION, AND TRAINING REQUIREMENTS
Subpart H—Training
§ 172.701 Federal-State relationship.