# 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), Appendix 7

Extent: E+W+S+N.I.

Standard values
1.
Standard values for the declared air drag value Cd · Adeclared are defined according to Table 18. In case standard values shall be applied, no input data on air drag shall be provided to the simulation tool. In this case the standard values are allocated automatically by the simulation tool.
Table 18
Standard values for Cd · Adeclared
Vehicle group
Standard valueCd · Adeclared [m2]
1
7,1
2
7,2
3
7,4
4
8,4
5
8,7
9
8,5
10
8,8
11
8,5
12
8,8
16
9,0
2.
For vehicle configurations ‘rigid lorry + trailer’ the overall air drag value is calculated by the simulation tool by adding standard delta values for trailer influence as specified in Table 19 to the C d ·A declared value for the rigid lorry.
Table 19
Standard delta air drag values for trailer influence
Trailer
Standard delta air drag values for trailer influence [m2]
T1
1,3
T2
1,5
3.
For EMS vehicle configurations the air drag value of the overall vehicle configuration is calculated by the simulation tool by adding the standard delta values for EMS influence as specified in Table 20 to the air drag value for the baseline vehicle configuration.
Table 20
Standard delta Cd Acr (0) values for EMS influence
EMS configuration
Standard delta air drag values for EMS influence [m2]
(Class 5 tractor + ST1) + T2
1,5
(Class 9/11 truck) + dolly + ST 1
2,1
(Class 10/12 tractor + ST1) + T2
1,5

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Source: https://www.legislation.gov.uk/eur/2017/2400/annex/VIII/appendix/7 (the official version)
Page: https://openlegislation.uk/eu-regulation-2017-2400/annex-VIII/appendix-7
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.