Document ID: chunk:federal_register_of_legislation:F2021C01210:reg:6:p19
Version: federal_register_of_legislation:F2021C01210
Segment Type: reg
Provision Reference: reg 6 (pt 19/24)
Character Range: 50398–53346

relation to the data collected for type-approval as reported in paragraph 11.1.2.2. of Annex 2 to this Regulation.  If this inspection requires a special procedure, this shall be detailed in the service manual (or equivalent media).  This special procedure shall not require the use of special equipment other than that provided with the vehicle.
24.2 Specifications concerning cold-start devices
        24.2.1 The cold-start device shall be so designed and constructed that it cannot be brought into or kept in action when the engine is running normally.
        24.2.2 The provisions of paragraph 24.2.1 above shall not apply if at least one of the following conditions is met:
        24.2.2.1 The light absorption coefficient of the gases emitted by the engine at steady speeds when measured by the procedure prescribed in annex 4 to this Regulation with the cold-start device in operation, is within the limits prescribed in annex 7 to this Regulation.
        24.2.2.2 Keeping the cold-start device in operation causes the engine to stop within a reasonable time.
        24.3 Specifications concerning the emission of visible pollutants
        24.3.1. The emission of visible pollutants by the vehicle type submitted for approval shall be measured by the two methods described in Annexes 4 and 5 to this Regulation, relating respectively to tests at steady speeds and to tests under free acceleration.  If performing these tests on a hybrid electric vehicle requires a special procedure, this shall be detailed in the service manual (or equivalent media).  This special procedure shall not require the use of special equipment other than that provided with the vehicle.
        24.3.2 The emission of visible pollutants, as measured by the method described in annex 4 to this Regulation, shall not exceed the limits prescribed in annex 7 to this Regulation.
        24.3.3 In the case of engines with an exhaust-driven supercharger the absorption coefficient measured under free acceleration shall not exceed the limit prescribed in annex 7 for the nominal flow value corresponding to the maximum absorption coefficient measured during the tests at steady speeds, plus 0.5 m- 1.
        24.3.4 Equivalent measuring instruments shall be allowed. If an instrument other than those described in annex 8 to this Regulation is used, its equivalence for the engine considered shall be required to be proved.

25. MODIFICATION OF THE VEHICLE TYPE AND EXTENSION OF APPROVAL
        25.1 Every modification of the vehicle or component type with regard to the characteristics in annex 1 to this Regulation shall be notified to the administrative department which approved the vehicle type. The department may then either:
        25.1.1 Consider that the modifications made are unlikely to have an appreciable adverse effect, and that in any case the vehicle still complies with the requirements, or
        25.1.2 Require a further test report from