{"data":{"id":"us/49-cfr-372.243","jurisdiction":"us","citation":"49 CFR 372.243","heading":"Controlling distances and population data.","body":"In the application of § 372.241:\n(a) Air-line distances or mileages about corporate limits of municipalities shall be used.\n(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.\n(c) Contraction of municipal boundaries will not alter the size of commercial zones.","path":["Title 49—Transportation","Subtitle B—Other Regulations Relating to Transportation","CHAPTER III—FEDERAL MOTOR CARRIER SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION","SUBCHAPTER B—FEDERAL MOTOR CARRIER SAFETY REGULATIONS","PART 372—EXEMPTIONS, COMMERCIAL ZONES, AND TERMINAL AREAS","Subpart B—Commercial Zones"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-49.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:34Z","sha256":"7c6ae9b97ad696153157d1fbd6c5c4855d92b0320c7fb9acfa50ae1145853700","source_id":"us-cfr","stale":true,"prev":"us/49-cfr-372.241","next":"us/49-cfr-372.245"},"notice":"GroundRules: Original legal text. Not legal advice."}