Document ID: chunk:federal_register_of_legislation:F2024L00447:reg:1:p3
Version: federal_register_of_legislation:F2024L00447
Segment Type: reg
Provision Reference: reg 1 (pt 3/13)
Character Range: 56853–59848

is valid following the verifications in accordance with STEP i, the methods for verifying the validity of the trip as laid down in Annexes 8 and 10 shall be applied.

              8.3. Vehicle condition and operation

              8.3.1.  Vehicle condition

              The vehicle, including the emission related components, shall be in good mechanical condition and shall have been run in and driven at least 3,000 km before the test. The mileage and the age of the vehicle used for RDE testing shall be recorded.

              All vehicles, and in particular OVC-HEVs vehicles may be tested in any selectable mode, including battery charge mode. On the basis of technical evidence provided by the manufacturer and with the agreement of the responsible authority, the dedicated driver-selectable modes for very special limited purposes shall not be considered (e.g. maintenance mode, race driving, crawler mode). All remaining modes used for forward and for rearwards driving where road and traffic conditions demand this may be considered and the criteria emissions limits shall be fulfilled in all these modes.

              Modifications that affect the vehicle aerodynamics are not permitted, with the exception of the PEMS installation. The tyre types and pressure shall be according to the vehicle's manufacturer recommendations. The tyre pressure shall be checked prior to the pre-conditioning and adjusted to the recommended values if needed. Driving the vehicle with snow chains is not permitted.

              Vehicles should not be tested with an empty starter battery. In case the vehicle has problems starting, the battery shall be replaced following the recommendations of the vehicle's manufacturer.

              The vehicle's test mass comprises of the driver, a witness of the test (if applicable), the test equipment, including the mounting and the power supply devices and any artificial payload. It shall be between the actual mass of the vehicle and the maximum permissible test mass of the vehicle at the beginning of the test and shall not increase during the test.

              The test vehicles shall not be driven with the intention to generate a passed or failed test due to extreme driving that do not represent normal conditions of use. If necessary, verification of normal driving may be based on expert judgement made by or on behalf of the granting type approval authority through cross-correlation on several signals, which may include exhaust flow rate, exhaust temperature, CO2, O2 etc. in combination with vehicle speed, acceleration and GNSS data and potentially further vehicle data parameters like engine speed, gear, accelerator pedal position etc.

              8.3.2. Vehicle conditioning for cold start PEMS trip

              Before RDE testing, the vehicle shall be preconditioned in the following way:

              The vehicle shall be driven, preferably on the same route as the planned RDE testing, or for at least 10 min per type