(a) Except as specified otherwise in this subpart, the provisions of §§92.904 through 92.911 exempt certain new locomotives and new locomotive engines from the standards, other requirements, and prohibitions of this part, except for the requirements of this subpart and the requirements of §92.1104.

(b)

(1) Any person may request a testing exemption subject to the provisions of §92.905.

(2) Any locomotive or locomotive engine manufacturer or remanufacturer may request a national security exemption subject to the provisions of §92.908.

(3) Locomotive or locomotive engines manufactured or remanufactured for export purposes are exempt without application, subject to the provisions of §92.909, except as otherwise specified by §92.909.

(4) Manufacturer-owned and remanufacturer-owned locomotive or locomotive engines are exempt without application, subject to the provisions of §92.906(a).

(5) Display locomotive or locomotive engines are exempt without application, subject to the provisions of §92.906(b).

(6) Locomotive propulsion engines that are identical to engines that are covered by a certificate of conformity issued under 40 CFR part 89, and the locomotives in which they are used, are exempt, subject to the provisions of §92.907.