49 CFR § 172.822
Limitation on actions by states, local governments, and Indian tribes
November 18, 2020
A law, order, or other directive of a state, political subdivision of a state, or an Indian tribe that designates, limits, or prohibits the use of a rail line (other than a rail line owned by a state, political subdivision of a state, or an Indian tribe) for the transportation of hazardous materials, including, but not limited to, the materials specified in §172.820(a), is preempted. 49 U.S.C. 5125, 20106.
[73 FR 20772, Apr. 16, 2008]