Section 238.115 - Emergency lighting(a) Prior to January 1, 2017, the requirements specified in paragraphs (a)(1) through (4) of this section apply to each passenger car ordered on or after September 8, 2000, or placed in service for the first time on or after September 9, 2002. Emergency lighting shall be provided in each passenger car and shall include the following:(1) A minimum, average illumination level of 1 foot-candle measured at floor level adjacent to each exterior door and each interior door providing access to an exterior door (such as a door opening into a vestibule);(2) A minimum, average illumination level of 1 foot-candle measured 25 inches above floor level along the center of each aisle and passageway;(3) A minimum illumination level of 0.1 foot-candle measured 25 inches above floor level at any point along the center of each aisle and passageway; and(4) A back-up power system capable of: (i) Operating in all equipment orientations within 45 degrees of vertical;(ii) Operating after the initial shock of a collision or derailment resulting in the following individually applied accelerations: (iii) Operating all emergency lighting for a period of at least 90 minutes without a loss of more than 40% of the minimum illumination levels specified in this paragraph (a).(b)(1) As further specified in paragraph (b)(2) of this section, on or after January 1, 2017, emergency lighting shall be provided in each passenger car in accordance with the minimum requirements specified in APTA PR-E-S-013-99, Rev. 1, "Standard for Emergency Lighting System Design for Passenger Cars," Authorized October 7, 2007, or an alternative standard providing at least an equivalent level of safety if approved by FRA pursuant to § 238.21 . The incorporation by reference of this APTA standard was approved by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR Part 51 . You may obtain a copy of the incorporated document from the American Public Transportation Association, 1666 K Street NW., Washington, DC 20006, www.aptastandards.com. You may inspect a copy of the document at the Federal Railroad Administration, Docket Clerk, 1200 New Jersey Avenue SE., Washington, DC or at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, call 202-741-6030, or go to: http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html.(2) No later than December 31, 2015, at least 70 percent of each railroad's passenger cars that were ordered prior to September 8, 2000, and placed in service prior to September 9, 2002, shall be in compliance with the emergency lighting requirements provided in paragraph (b)(1) of this section. 78 FR 71813 , Nov. 29, 2013