# Commission Regulation (EU) 2017/1151 of 1 June 2017 supplementing Regulation (EC) No 715/2007 of the European Parliament and of the Council on type-approval of motor vehicles with respect to emissions from light passenger and commercial vehicles (Euro 5 and Euro 6) and on access to vehicle repair and maintenance information, amending Directive 2007/46/EC of the European Parliament and of the Council, Commission Regulation (EC) No 692/2008 and Commission Regulation (EU) No 1230/2012 and repealing Commission Regulation (EC) No 692/2008 (Text with EEA relevance), Division 3: For the calculation of a fractional utility factor UFj for the weighting of period j, the following equation shall be applied by using the coefficients from Table A8.App5/1.


UFjdj=1−exp −∑ki=1Ci×djdni−∑j−1l=1UFl
where:
UFjutility factor for period j;
djmeasured distance driven at the end of period j, km;
Ciith coefficient (see Table A8.App5/1);
dnnormalized distance (see Table A8.App5/1), km;
knumber of terms and coefficients in the exponent;
jnumber of period considered;
inumber of considered term/coefficient;
∑j−1l=1UFlsum of calculated utility factors up to period (j – 1).
Table A8.App5/1
Parameters for the determination of fractional UFs
Parameter
Value
dn
800 km
C1
26,25
C2
– 38,94
C3
– 631,05
C4
5 964,83
C5
– 25 095
C6
60 380,2
C7
– 87 517
C8
75 513,8
C9
– 35 749
C10
7 154,94

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Source: https://www.legislation.gov.uk/eur/2017/1151/annex/Sub/8n6/division/division/3. (the official version)
Page: https://openlegislation.uk/eu-regulation-2017-1151/annex-Sub/8n6/division/division-3.
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.