The Department of Transportation has adopted by reference Appendices B and D to this part with modifications as the regulatory standards for the construction and alteration of transportation facilities subject to its regulations under the Americans with Disabilities Act, effective November 29, 2006. 49 CFR 37.9 and Appendix A to 49 CFR part 37, as amended at 71 FR 63263, October 30, 2006; and corrected at 72 FR 11089, March 12, 2007. The Department of Transportation has modified section 206.3 in Appendix B to this part; and sections 406, 810.2.2, and 810.5.3 in Appendix D to this part. The modified sections adopted by the Department of Transportation are reprinted in this appendix. Entities that are required to comply with the Department of Transportation's regulatory standards, must comply with modified sections adopted by the Department of Transportation that are reprinted in this appendix. The Department of Transportation has provided supplemental information on the modified sections in Appendix D to 49 CFR part 37.

Modification to 206.3 of Appendix B

206.3   Location. Accessible routes shall coincide with, or be located in the same area as general circulation paths. Where circulation paths are interior, required accessible routes shall also be interior. Elements such as ramps, elevators, or other circulation devices, fare vending or other ticketing areas, and fare collection areas shall be placed to minimize the distance which wheelchair users and other persons who cannot negotiate steps may have to travel compared to the general public.

Modification to 406 of Appendix D

406.8   Detectable Warnings. A curb ramp shall have a detectable warning complying with 705. The detectable warning shall extend the full width of the curb ramp (exclusive of flared sides) and shall extend either the full depth of the curb ramp or 24 inches (610 mm) deep minimum measured from the back of the curb on the ramp surface.

Modification to 810.2.2 of Appendix D

810.2.2   Dimensions. Bus boarding and alighting areas shall provide a clear length of 96 inches (2440 mm), measured perpendicular to the curb or vehicle roadway edge, and a clear width of 60 inches (1525 mm), measured parallel to the vehicle roadway. Public entities shall ensure that the construction of bus boarding and alighting areas comply with 810.2.2, to the extent the construction specifications are within their control.

Modification to 810.5.3 of Appendix D

810.5.3   Platform and Vehicle Floor Coordination. Station platforms shall be positioned to coordinate with vehicles in accordance with the applicable requirements of 36 CFR part 1192. Low-level platforms shall be 8 inches (205 mm) minimum above top of rail. In light rail, commuter rail, and intercity rail systems where it is not operationally or structurally feasible to meet the horizontal gap or vertical difference requirements of part 1192 or 49 CFR part 38, mini-high platforms, car-borne or platform-mounted lifts, ramps or bridge plates or similarly manually deployed devices, meeting the requirements of 49 CFR part 38, shall suffice.

Exception: Where vehicles are boarded from sidewalks or street-level, low-level platforms shall be permitted to be less than 8 inches (205 mm).

[72 FR 13707, Mar. 23, 2007]