Amendment to the Fuel Economy Standards and Regulations on Vehicle Inspection and Administration Article 24
24.1 The same test method and driving cycle should be used for the vehicle type approval test, conformity test as described in Paragraph 14.1 of Article 14, for the retest as defined in Article 22, and for the energy efficiency retest as described in Article 23.24.2 The same Accredited Agency that conduct the test should be used for the conformity test as described in Paragraph 14.1 of Article 14, for the retest as defined in Article 22, and for the energy efficiency retest as described in Article 23.