107.202—Standards for determining preemption.

(a) Except as provided in § 107.221 and unless otherwise authorized by Federal law, any requirement of a State or political subdivision thereof or an Indian tribe that concerns one of the following subjects and that is not substantively the same as any provision of the Federal hazardous materials transportation law, a regulation issued under the Federal hazardous material transportation law, or a hazardous material transportation security regulation or directive issued by the Secretary of Homeland Security that concerns that subject, is preempted:
(b) Except as provided in § 107.221 and unless otherwise authorized by Federal law, any requirement of a State or political subdivision or Indian tribe is preempted if—
[Amdt. 107-24, 56 FR 8622, Feb. 28, 1991, as amended by Amdt. 107-25, 57 FR 20428, May 13, 1992; Amdt. 107-29, 58 FR 51527, Oct. 1, 1993; Amdt. 107-32, 59 FR 49130, Sept. 26, 1994; Amdt. 107-38, 61 FR 21098, May 9, 1996; Amdt. 107-39, 61 FR 51337, Oct. 1, 1996; 68 FR 52847, Sept. 8, 2003]