CFR›Title 49›Subtitle B›Chapter III›Part 393›Subpart D ContainsSections 393.60–393.63CorpusDaily eCFRDisplayed edition2026-04-15Last updated2026-04-15 Subpart D—Glazing and Window Construction Sections 393.60 § 393.60 Glazing in specified openings. 393.61 § 393.61 Truck and truck tractor window construction. 393.62 § 393.62 Emergency exits for buses. 393.63 § 393.63 [Reserved] Previous C Subpart C—Brakes Next E Subpart E—Fuel Systems