Section 13 - Tucson, Ariz.

That zone adjacent to and commercially a part of Tucson, Ariz., within which transportation by motor vehicle, in interstate or foreign commerce, not under a common control, management, or arrangement for a continuous carriage or shipment to or from a point beyond the zone, is partially exempt, under section 203(b)(8) of the Interstate Commerce Act (49 U.S.C. 303(b)(8)) from regulation, includes, and is comprised of, all points as follows:

(a) The municipality of Tucson, Ariz., itself.

(b) All points within a line drawn 5 miles beyond the corporate limits of Tucson, Ariz.

(c) All points in that area south of the line described in paragraph (b) of this section, bounded by a line as follows: Beginning at the point where the line described in paragraph (b) of this section, intersects Wilmot Road, thence south along Wilmot Road to junction Nogales Old Vail Connection, thence west along Nogales Old Vail Connection, actual or extended, to the Santa Cruz River, thence north along the east bank of the Santa Cruz River to its joinder with the line described in paragraph (b) of this section.

(d) All of any municipality any part of which is within the limits of the combined areas defined in paragraphs (b) and (c) of this section.

(e) All of any municipality wholly surrounded, or so surrounded except for a water boundary, by the city of Tucson or by any municipality included under the terms of paragraph (d) of this section.