# Commission Regulation (EU) 2017/2400 of 12 December 2017 implementing Regulation (EC) No 595/2009 of the European Parliament and of the Council as regards the determination of the CO2 emissions and fuel consumption of heavy-duty vehicles and amending Directive 2007/46/EC of the European Parliament and of the Council and Commission Regulation (EU) No 582/2011 (Text with EEA relevance), Division 3.9: Input data for air drag pre-processing tool Extent: E+W+S+N.I. The following tables show the requirements for the measurement data recording and the preparatory data processing for the input into the air drag pre-processing tool: Table 2 for the vehicle data file Table 3 for the ambient conditions file Table 4 for the measurement section configuration file Table 5 for the measurement data file Table 6 for the altitude profile files (optional input data) A detailed description of the requested data formats, the input files and the evaluation principles can be found in the technical documentation of the air drag pre-processing tool. The data processing shall be applied as specified in section 3.8 of this Annex. Table 2 Input data for the air drag pre-processing tool – vehicle data file Specification of transmission ratios with at least 3 digits after decimal separator If the wheel speed signal is provided to the air drag pre-processing tool (option for vehicles with torque converters, see section 3.4.3 the axle ratio shall be set to ‘1.000’. Input only required if value is lower than 88 km/h. Input data Unit Remarks Vehicle group code [-] 1 - 17 for trucks Vehicle configuration with trailer [-] if the vehicle was measured without trailer (input ‘No’) or with trailer i.e. as a truck/trailer or tractor semitrailer combination (input ‘Yes’) Vehicle test mass [kg] actual mass during measurements Gross vehicle mass [kg] gross vehicle mass of the rigid lorry or tractor (w/o trailer or semitrailer) Axle ratio [-] axle transmission ratio Gear ratio high speed [-] transmission ratio of gear engaged during high speed test Gear ratio low speed [-] transmission ratio of gear engaged during low speed test Anemometer height [m] height above ground of the measurement point of installed anemometer Vehicle height [m] maximum vehicle height according to 3.5.3.1 item vii. Gear box type [-] manual or automated transmission: ‘ SMT ’ , ‘ AMT ’ , ‘ DCT ’ , automatic transmission with torque converter: ‘ APT ’ Vehicle maximum speed [km/h] maximum speed the vehicle can be practically operated at the test track Table 3 Input data for the air drag pre-processing tool – ambient conditions file Signal Column identifier in input file Unit Measurement rate Remarks Time [s] since day start (first day) — — Ambient temperature [°C] At least 1 averaged value per 6 minutes Stationary weather station Ambient pressure [mbar] Stationary weather station Relative air humidity [%] Stationary weather station Table 4 Input data for air drag pre-processing tool – measurement section configuration file Input data Unit Remarks Trigger signal used [-] 1 = trigger signal used; 0 = no trigger signal used Measurement section ID [-] user defined ID number Driving direction ID [-] user defined ID number Heading [°] heading of the measurement section Length of the measurement section [m] — Latitude start point of section decimal degrees or decimal minutes standard GPS, unit decimal degrees: minimum 5 digits after decimal separator Longitude start point of section standard GPS, unit decimal minutes: minimum 3 digits after decimal separator Latitude end point of section DGPS, unit decimal degrees: minimum 7 digits after decimal separator Longitude end point of section DGPS, unit decimal minutes: minimum 5 digits after decimal separator Path and/or filename of altitude file [-] only required for the constant speed tests (not the misalignment test) and if the altitude correction is enabled. Table 5 Input data for the air drag pre-processing tool – measurement data file Signal Column identifier in input file Unit Measurement rate Remarks Time [s] since day start (of first day) 100 Hz rate fixed to 100 Hz; time signal used for correlation with weather data and for check of frequency (D)GPS latitude decimal degrees or decimal minutes GPS: ≥ 4 Hz DGPS: ≥ 100 Hz standard GPS, unit decimal degrees: minimum 5 digits after decimal separator (D)GPS longitude standard GPS, unit decimal minutes: minimum 3 digits after decimal separator DGPS, unit decimal degrees: minimum 7 digits after decimal separator DGPS, unit decimal minutes: minimum 5 digits after decimal separator (D)GPS heading [°] ≥ 4Hz DGPS velocity [km/h] ≥ 20 Hz Vehicle velocity [km/h] ≥ 20 Hz raw CAN bus front axle signal Air speed [m/s] ≥ 4 Hz raw data (instrument reading) Inflow angle (beta) [°] ≥ 4 Hz raw data (instrument reading); ‘180°’ refers to air flow from front Engine speed or cardan speed or [rpm] ≥ 20 Hz cardan speed for vehicles with torque converter not locked during low speed test Torque meter (left wheel) [Nm] ≥ 20 Hz — Torque meter (right wheel) [Nm] ≥ 20 Hz Ambient temperature on vehicle [°C] ≥ 1 Hz Trigger signal [-] 100 Hz optional signal; required if measurement sections are identified by opto electronic barriers (option ‘trigger_used=1’) Proving ground temperature [°C] ≥ 1 Hz Validity [-] — optional signal (1=valid; 0=invalid); Table 6 Input data for the air drag pre-processing tool – altitude profile file Input data Unit Remarks Latitude decimal degrees or decimal minutes unit decimal degrees: minimum 7 digits after decimal separator Longitude unit decimal minutes: minimum 5 digits after decimal separator Altitude [m] minimum 2 digits after decimal separator --- Source: https://www.legislation.gov.uk/eur/2017/2400/annex/VIII/division/3/division/3.9 (the official version) Page: https://openlegislation.uk/eu-regulation-2017-2400/annex-VIII/division-3/division-3.9 Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.