40 CFR 86.423-78 - Test vehicles.
(1) Before beginning service accumulation on a test vehicle, the manufacturer may perform a zero-kilometer exhaust emission test.
(2) If such a test is performed, the data shall be submitted to the Administrator when the application is submitted.
(3) Zero-kilometer test results shall not be included in the determination of deterioration factors.
(b) Once a manufacturer begins to operate a test vehicle, as indicated by compliance with paragraph (a) of this section, the data from the vehicle will be used, unless specified otherwise by the Administrator. Discontinuation of a vehicle shall be allowed only with the written consent of the Administrator.
(c) Test vehicles shall be calibrated at zero kilometres within the production tolerances applicable to the manufacturer's specifications.