40 CFR §85.1704

1. (a)Any person may request a testing exemption.
2. (b)Any manufacturer may request a national security exemption under § 85.1708.
3. (c)For manufacturers, vehicles or engines for export purposes are exempt without application, subject to the provisions of § 85.1709. For eligible manufacturers, as determined by § 85.1706, vehicles or engines for pre-certification purposes are exempt without application, subject to the provisions of § 85.1706(a).