Document ID: chunk:federal_register_of_legislation:F2024L00446:reg:16:p83
Version: federal_register_of_legislation:F2024L00446
Segment Type: reg
Provision Reference: reg 16 (pt 83/108)
Character Range: 1122482–1125596

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, crawler mode). All remaining modes used for forward driving shall be considered and the criteria emissions limits shall be fulfilled in all these modes.
              2.6.6.5. Paragraphs 2.6.6.1. to 2.6.6.4. inclusive of this annex shall apply to all vehicle systems with driver-selectable modes, including those not solely specific to the transmission.
              2.6.7. Voiding of the Type 1 test and completion of the cycle
              If the engine stops unexpectedly, the preconditioning or Type 1 test shall be declared void.
              After completion of the cycle, the engine shall be switched off. The vehicle shall not be restarted until the beginning of the test for which the vehicle has been preconditioned.
              2.6.8. Data required, quality control
              2.6.8.1. Speed measurement
              During the preconditioning, speed shall be measured against time or collected by the data acquisition system at a frequency of not less than 1 Hz so that the actual driven speed can be assessed.
              2.6.8.2. Distance travelled
              The distance actually driven by the vehicle shall be recorded for each WLTC phase.
              2.6.8.3. Speed trace tolerances
              Vehicles that cannot attain the acceleration and maximum speed values required in the applicable WLTC shall be operated with the accelerator control fully activated until they once again reach the required speed trace. Speed trace violations under these circumstances shall not void a test. Deviations from the driving cycle shall be recorded.
              2.6.8.3.1. Unless otherwise stated in the specific sections, the following tolerances shall be permitted between the actual vehicle speed and the prescribed speed of the applicable test cycles based on the driving events:

              2.6.8.3.1.1. Tolerance (1)

                  (a) Upper limit: 2.0 km/h higher than the highest point of the trace within ±5.0 second of the given point in time;

                  (b) Lower limit: 2.0 km/h lower than the lowest point of the trace within ±5.0 second of the given time.

              2.6.8.3.1.2. Tolerance (2)

                  (a) Upper limit: 2.0 km/h higher than the highest point of the trace within ±1.0 second of the given point in time;

                  (b) Lower limit: 2.0 km/h lower than the lowest point of the trace within ±1.0 second of the given time.

                     (i) Speed tolerances greater than those prescribed shall be accepted provided the tolerances are never exceeded for more than 1 second on any one occasion.

                  (ii) There shall be no more than ten such deviations per test cycle.

              2.6.8.3.1.3. Tolerance (3)

IWR           For Level 1A and 1B  in the range of – 2.0 to + 4.0 per cent
RMSSE         For Level 1A         less than 1.3 km/h
For Level 1B  less than 0.8 km/h

2.6.8.3.1.4. Tolerance (4)
IWR           For Level 1A and 1B