{"data":{"id":"us/49-cfr-238.407","jurisdiction":"us","citation":"49 CFR 238.407","heading":"Anti-climbing mechanism.","body":"(a) Each power car shall have an anti-climbing mechanism at its forward end capable of resisting an ultimate upward or downward static vertical force of 200,000 pounds. A power car constructed with a crash energy management design is permitted to crush in a controlled manner before the anti-climbing mechanism fully engages.\n(b) Interior train coupling points between units, including between units of articulated cars or other permanently joined units of cars, shall have an anti-climbing mechanism capable of resisting an upward or downward vertical force of 100,000 pounds without yielding.\n(c) The forward coupler of a power car shall be attached to the car body to resist a vertical downward force of 100,000 pounds for any horizontal position of the coupler without yielding.","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":"155b32d00bf6c5f2505244632a3d930c11b9a144d8f7aed96774db5488a45636","source_id":"us-cfr","stale":true,"prev":"us/49-cfr-238.405","next":"us/49-cfr-238.409"},"notice":"GroundRules: Original legal text. Not legal advice."}