Federal-State relationship.

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.#