[Code of Federal Regulations] [Title 49, Volume 5] [Revised as of October 1, 2005] From the U.S. Government Printing Office via GPO Access [CITE: 49CFR372.243] [Page 75] TITLE 49--TRANSPORTATION DEPARTMENT OF TRANSPORTATION PART 372_EXEMPTIONS, COMMERCIAL ZONES, AND TERMINAL AREAS--Table of Contents Subpart B_Commercial Zones Sec. 372.243 Controlling distances and population data. In the application of Sec. 372.241: (a) Air-line distances or mileages about corporate limits of municipalities shall be used. (b) The population of any municipality shall be deemed to be the highest figure shown for that municipality in any decennial census since (and including) the 1940 decennial census. (c) Contraction of municipal boundaries will not alter the size of commercial zones. [32 FR 20040, Dec. 20, 1967, as amended at 37 FR 15701, Aug. 4, 1972; 50 FR 10233, Mar. 14, 1985; 62 FR 15422, Apr. 1, 1997]