49 CFR Part 238
§ 238.721 — Glazing
FRA Part 238 · Subpart H — Specific Requirements for Tier III Passenger Equipment. Full current text with cross-references on BuildSpec.
§ 238.721 Glazing. (a) Cab glazing; end-facing. (1) Each end-facing exterior window in a cab of a Tier III trainset shall comply with the requirements for Type I glazing in appendix A to part 223 of this chapter, except as provided in paragraphs (a)(2) through (4) of this section. (2) Instead of the large object impact test specified in appendix A to part 223, each end-facing exterior window in a cab shall demonstrate compliance with the following requirements of this paragraph (a): (i) The glazing article shall be impacted with a cylindrical projectile that complies with the following design…
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