Document ID: chunk:federal_register_of_legislation:F2024L00447:reg:1:p8
Version: federal_register_of_legislation:F2024L00447
Segment Type: reg
Provision Reference: reg 1 (pt 8/13)
Character Range: 70363–73202

tolerance of 15 km/h for not more than 3 per cent of the time duration of the motorway operation. Local speed limits remain in force during a PEMS test, notwithstanding other legal consequences. Violations of local speed limits per se do not invalidate the results of a PEMS test.

              Stop periods, defined by vehicle speed of less than 1 km/h, shall account for 6-30 per cent of the time duration of urban operation. Urban operation may contain several stop periods of 10 s or longer. If stop periods in urban driving part are over 30 per cent or there are individual stop periods exceeding 300 consecutive seconds, the test shall be invalid only if the emission limits are not met.

              The trip duration shall be between 90 and 120 minutes.

              The start and the end points of a trip shall not differ in their elevation above sea level by more than 100 m. In addition, the proportional cumulative positive altitude gain over the entire trip and over the urban operation shall be less than 1,200 m/100 km and be determined in accordance with Annex 10.

              9.3.4.  The average speed (including stops) during cold start period shall be between 15 and 40 km/h. The maximum speed during the cold start period shall not exceed 60 km/h.

              At the test start, the vehicle shall move within 15 seconds. The vehicle stop periods during the entire cold start period, as defined in paragraph 3.6.1., shall be kept to the minimum possible and it shall not exceed 90 s in total.

              9.4. Other trip requirements

              If the engine stalls during the test, it may be restarted, but the sampling and data recording shall not be interrupted. If the engine stops during the test, the sampling and data recording shall not be interrupted.

              In general the exhaust mass flow shall be determined by measurement equipment functioning independently from the vehicle. With agreement of the approval authority, vehicle ECU data may be used in this respect during type approval.

              If the approval authority is not satisfied with the data quality check and validation results of a PEMS test conducted in accordance with Annex 4, the approval authority may consider the test to be invalid. In such case, the test data and the reasons for invalidating the test shall be recorded by the approval authority.

              The manufacturer shall demonstrate to the approval authority that the chosen vehicle, driving patterns, conditions and payloads are representative of the PEMS test family. The ambient conditions and payload requirements, as specified in paragraph 8.1. and paragraph 8.3.1. respectively, shall be used ex-ante to determine whether the conditions are acceptable for RDE testing.

              The approval authority shall propose a test trip in