CFR›Title 49›Subtitle B›Chapter II›Part 223 ContainsSubpart A; Appendix A; Subpart BCorpusDaily eCFRDisplayed edition2026-04-15Last updated2026-04-15 PART 223—SAFETY GLAZING STANDARDS—LOCOMOTIVES, PASSENGER CARS AND CABOOSES Contents A Subpart A—General Sections 223.1–223.7 Appendix A to Part 223 Appendix A to Part 223—Certification of Glazing Materials B Subpart B—Specific Requirements Sections 223.8–223.17 Authority49 U.S.C. 20102-20103, 20133, 20701-20702, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.Source44 FR 77352, Dec. 31, 1979, unless otherwise noted. Previous 222 Part 222—Use of Locomotive Horns at Public Highway-Rail Grade Crossings Next 224 Part 224—Reflectorization of Rail Freight Rolling Stock