(a) General. Except as provided by paragraph (d) of this section or as provided in § 228.411, on and after April 12, 2012, railroads subject to this subpart shall comply with this subpart and §§ 228.11(c)(1)-(2) and 228.19(c)(5)-(c)(8) with respect to their train employees who are engaged in commuter or intercity rail passenger transportation.

(b) Exemption from compliance with statute. On and after October 15, 2011, railroads subject to this subpart or any provision of this subpart shall be exempt from complying with the provisions of old section 21103 and new section 21103 for such employees.

(c) Definitions. In this section—

(1) The term “new section 21103” means section 21103 of title 49, United States Code, as amended by the Rail Safety Improvement Act of 2008 (RSIA) effective July 16, 2009.

(2) The term “old section 21103” means section 21103 of title 49, United States Code, as it was in effect on the day before the enactment of the RSIA.

(d) Exceptions. (1) On and after October 15, 2011, railroads subject to this subpart shall comply with §§ 228.401, 228.403, 228.405(a)(1), (a)(2), (b), and (c), and 228.409(a).

(2) Railroads engaged in tourist, scenic, historic, or excursion rail passenger transportation, subject to this subpart, must comply with the sections listed in paragraph (d)(1) of this section on and after October 15, 2011, but are not required to comply with the other provisions of this subpart and §§ 228.11(c)(1)-(2) and 228.19(c)(5)-(c)(8) until April 12, 2013.