{"data":{"id":"us/49-cfr-appendix-a-to-part-1580","jurisdiction":"us","citation":"49 CFR Appendix A to Part 1580","heading":"Appendix A to Part 1580—High Threat Urban Areas (HTUAs)","body":"State Urban area Geographic areas\nAZ Phoenix Area Chandler, Gilbert, Glendale, Mesa, Peoria, Phoenix, Scottsdale, Tempe, and a 10-mile buffer extending from the border of the combined area.\nCA Anaheim/Santa Ana Area Anaheim, Costa Mesa, Garden Grove, Fullerton, Huntington Beach, Irvine, Orange, Santa Ana, and a 10-mile buffer extending from the border of the combined area.\nBay Area Berkeley, Daly City, Fremont, Hayward, Oakland, Palo Alto, Richmond, San Francisco, San Jose, Santa Clara, Sunnyvale, Vallejo, and a 10-mile buffer extending from the border of the combined area.\nLos Angeles/Long Beach Area Burbank, Glendale, Inglewood, Long Beach, Los Angeles, Pasadena, Santa Monica, Santa Clarita, Torrance, Simi Valley, Thousand Oaks, and a 10-mile buffer extending from the border of the combined area.\nSacramento Area Elk Grove, Sacramento, and a 10-mile buffer extending from the border of the combined area.\nSan Diego Area Chula Vista, Escondido, and San Diego, and a 10-mile buffer extending from the border of the combined area.\nCO Denver Area Arvada, Aurora, Denver, Lakewood, Westminster, Thornton, and a 10-mile buffer extending from the border of the combined area.\nDC National Capital Region National Capital Region and a 10-mile buffer extending from the border of the combined area.\nFL Fort Lauderdale Area Fort Lauderdale, Hollywood, Miami Gardens, Miramar, Pembroke Pines, and a 10-mile buffer extending from the border of the combined area.\nJacksonville Area Jacksonville and a 10-mile buffer extending from the city border.\nMiami Area Hialeah, Miami, and a 10-mile buffer extending from the border of the combined area.\nOrlando Area Orlando and a 10-mile buffer extending from the city border.\nTampa Area Clearwater, St. Petersburg, Tampa, and a 10-mile buffer extending from the border of the combined area.\nGA Atlanta Area Atlanta and a 10-mile buffer extending from the city border.\nHI Honolulu Area Honolulu and a 10-mile buffer extending from the city border.\nIL Chicago Area Chicago and a 10-mile buffer extending from the city border.\nIN Indianapolis Area Indianapolis and a 10-mile buffer extending from the city border.\nKY Louisville Area Louisville and a 10-mile buffer extending from the city border.\nLA Baton Rouge Area Baton Rouge and a 10-mile buffer extending from the city border.\nNew Orleans Area New Orleans and a 10-mile buffer extending from the city border.\nMA Boston Area Boston, Cambridge, and a 10-mile buffer extending from the border of the combined area.\nMD Baltimore Area Baltimore and a 10-mile buffer extending from the city border.\nMI Detroit Area Detroit, Sterling Heights, Warren, and a 10-mile buffer extending from the border of the combined area.\nMN Twin Cities Area Minneapolis, St. Paul, and a 10-mile buffer extending from the border of the combined entity.\nMO Kansas City Area Independence, Kansas City (MO), Kansas City (KS), Olathe, Overland Park, and a 10-mile buffer extending from the border of the combined area.\nSt. Louis Area St. Louis and a 10-mile buffer extending from the city border.\nNC Charlotte Area Charlotte and a 10-mile buffer extending from the city border.\nNE Omaha Area Omaha and a 10-mile buffer extending from the city border.\nNJ Jersey City/Newark Area Elizabeth, Jersey City, Newark, and a 10-mile buffer extending from the border of the combined area.\nNV Las Vegas Area Las Vegas, North Las Vegas, and a 10-mile buffer extending from the border of the combined entity.\nNY Buffalo Area Buffalo and a 10-mile buffer extending from the city border.\nNew York City Area New York City, Yonkers, and a 10-mile buffer extending from the border of the combined area.\nOH Cincinnati Area Cincinnati and a 10-mile buffer extending from the city border.\nCleveland Area Cleveland and a 10-mile buffer extending from the city border.\nColumbus Area Columbus and a 10-mile buffer extending from the city border.\nToledo Area Oregon, Toledo, and a 10-mile buffer extending from the border of the combined area.\nOK Oklahoma City Area Norman, Oklahoma and a 10-mile buffer extending from the border of the combined area.\nOR Portland Area Portland, Vancouver, and a 10-mile buffer extending from the border of the combined area.\nPA Philadelphia Area Philadelphia and a 10-mile buffer extending from the city border.\nPittsburgh Area Pittsburgh and a 10-mile buffer extending from the city border.\nTN Memphis Area Memphis and a 10-mile buffer extending from the city border.\nTX Dallas/Fort Worth/Arlington Area Arlington, Carrollton, Dallas, Fort Worth, Garland, Grand Prairie, Irving, Mesquite, Plano, and a 10-mile buffer extending from the border of the combined area.\nHouston Area Houston, Pasadena, and a 10-mile buffer extending from the border of the combined entity.\nSan Antonio Area San Antonio and a 10-mile buffer extending from the city border.\nWA Seattle Area Seattle, Bellevue, and a 10-mile buffer extending from the border of the combined area.\nWI Milwaukee Area Milwaukee and a 10-mile buffer extending from the city border.","path":["Title 49—Transportation","Subtitle B—Other Regulations Relating to Transportation","CHAPTER XII—TRANSPORTATION SECURITY ADMINISTRATION, DEPARTMENT OF HOMELAND SECURITY","SUBCHAPTER D—MARITIME AND SURFACE TRANSPORTATION SECURITY","PART 1580—FREIGHT RAIL TRANSPORTATION SECURITY"],"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":"fed2ba97ae61557930085ce7561020be52a8f579527c0099ac93140aa68b5b5f","source_id":"us-cfr","stale":true,"prev":"us/49-cfr-1580.207","next":"us/49-cfr-appendix-b-to-part-1580"},"notice":"GroundRules: Original legal text. Not legal advice."}