{"data":{"id":"us/49-cfr-393.89","jurisdiction":"us","citation":"49 CFR 393.89","heading":"Buses, driveshaft protection.","body":"Any driveshaft extending lengthways under the floor of the passenger compartment of a bus shall be protected by means of at least one guard or bracket at that end of the shaft which is provided with a sliding connection (spline or other such device) to prevent the whipping of the shaft in the event of failure thereof or of any of its component parts. A shaft contained within a torque tube shall not require any such device.","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 393—PARTS AND ACCESSORIES NECESSARY FOR SAFE OPERATION","Subpart G—Miscellaneous Parts and Accessories"],"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":"8ac8b3c2e179bb015995482cd6f8039ef968db30e1bf4fbc0b1078d94b525ae6","source_id":"us-cfr","stale":true,"prev":"us/49-cfr-393.88","next":"us/49-cfr-393.90"},"notice":"GroundRules: Original legal text. Not legal advice."}