{"data":{"id":"us/49-cfr-238.423","jurisdiction":"us","citation":"49 CFR 238.423","heading":"Fuel tanks.","body":"(a) External fuel tanks. Each type of external fuel tank must be approved by FRA's Associate Administrator for Safety upon a showing that the fuel tank provides a level of safety at least equivalent to a fuel tank that complies with the external fuel tank requirements in § 238.223(a).\n(b) Internal fuel tanks. Internal fuel tanks shall comply with the requirements specified in § 238.223(b).","path":["Title 49—Transportation","Subtitle B—Other Regulations Relating to Transportation","CHAPTER II—FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF TRANSPORTATION","PART 238—PASSENGER EQUIPMENT SAFETY STANDARDS","Subpart E—Specific Requirements for Tier II Passenger Equipment"],"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":"29e3d87af9f68cffb5058d0cae3ba07d36dfdb9c0511ec7d18d643819669e93c","source_id":"us-cfr","stale":true,"prev":"us/49-cfr-238.421","next":"us/49-cfr-238.425"},"notice":"GroundRules: Original legal text. Not legal advice."}