(a) A new locomotive or locomotive engine intended solely for export, and so labeled or tagged on the outside of any container, the locomotive and on the engine itself, is subject to the provisions of §92.1103, unless the importing country has new locomotive or new locomotive engine emission standards which differ from EPA standards.

(b) For the purpose of paragraph (a) of this section, a country having no standards whatsoever is deemed to be a country having emission standards which differ from EPA standards.

(c) It is a condition of any exemption for the purpose of export under paragraph (a) of this section, that such exemption is void ab initio with respect to a new locomotive or locomotive engine intended solely for export, where such locomotive or locomotive engine is sold, or offered for sale, to an ultimate purchaser or otherwise distributed or introduced into commerce in the United States for purposes other than export.