49 CFR Part 238
§ 238.421 — Glazing
FRA Part 238 · Subpart E — Specific Requirements for Tier II Passenger Equipment. Full current text with cross-references on BuildSpec.
§ 238.421 Glazing. (a) General. Except as provided in paragraphs (b) and (c) of this section, each exterior window on a passenger car and a power car cab shall comply with the requirements contained in part 223 of this chapter. (b) Particular end-facing exterior glazing requirements. Each end-facing exterior window in a passenger car and a power car cab shall also, in the orientation in which it is installed in the car: (1) Resist the impact of a 12-pound solid steel sphere traveling (i) at the maximum speed at which the car will operate (ii) at an impact angle no less severe than horizontal…
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