# Commission Decision of 6 October 2009 on the definition of the European Electronic Toll Service and its technical elements (notified under document C(2009) 7547) (Text with EEA relevance) (2009/750/EC), Division 2.1: Without prejudice to General Provision 1.1 here-above, a Toll Charger may use as vehicle classification parameters:

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

(a) any measurable vehicle parameter that can be unambiguously measured by its road side equipment;
(b) any vehicle parameter that is supported by standard EN 15509 and ETSI ES 200674-1 and its related Technical Reports for protocol implementation;
(c) the vehicle parameters which are mandatory in vehicles registration documents and as standardised in CEN ISO/TS24534;
(d) the variable vehicle classification parameters currently used in toll systems, e.g. number of axles (including lifted axles), presence of a trailer etc.;
(e) the following environmental parameters;
the vehicle’s emission class, i.e. its environmental category in accordance to Council Directive 88/77/EEC and Directive 2006/38/EC of the European Parliament and of the Council;
an harmonised CO2 related parameter, e.g. the harmonised community code V.7 in vehicles registration documents.

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Source: https://www.legislation.gov.uk/eudn/2009/750/annex/VI/division/2/division/2.1 (the official version)
Page: https://openlegislation.uk/eu-decision-2009-750/annex-VI/division-2/division-2.1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.