36 CFR Parts 1190 and 1191 ADA and ABA Accessibility Guidelines - Preamble (Discussion of Comments and Changes)

Section 810.10 addresses track crossings at transportation facilities. The proposed rule required route surfaces to be level with the rail top, but permitted a 2 ½ inch gap at the inner edge of rails to accommodate wheel flanges (1003.2.7). Where this gap is not practicable, an above-grade or below grade accessible route was specified. In the final rule, the Board has simplified this provision by applying specifications for accessible routes. An exception preserves the permitted 2 ½ inch gap for wheel flanges.