49 C.F.R. § 234.4 Preemptive effect.
Title 49 - Transportation
Under 49 U.S.C. 20106 (formerly §205 of the Federal Railroad Safety Act of 1970 (45 U.S.C. 434)), issuance of these regulations preempts any State law, rule, regulation, order, or standard covering the same subject matter, except a provision directed at an essentially local safety hazard that is consistent with this part and that does not impose an undue burden on interstate commerce.
Title 49: Transportation
PART 234—GRADE CROSSING SIGNAL SYSTEM SAFETY
Subpart A—General
§ 234.4 Preemptive effect.
