49 C.F.R. § 372.247
The zone adjacent to, and commercially a part of El Paso, TX, within which transportation of passengers or property by motor carriers in interstate or foreign commerce, not under common control, management, or arrangement for a continuous carriage or shipment to or from a point beyond such zone, is partially exempt from regulation under 49 U.S.C. 13506(b)(1), includes and is comprised of all points as follows:
(c) All of any other municipalities and all unincorporated areas within the United States which are adjacent to the City of El Paso as follows:
[81 FR 9121, Feb. 24, 2016]