# The Police Regulations 1987, Paragraph 1


For the purposes of regulation 60 and this Schedule the following expressions have the meanings hereby respectively assigned to them:—
“authorised use” means the use, authorised under regulation 60, of a motor vehicle owned by the member of a police force concerned for the purposes of his duties as a member of that force or, where he has been statutorily transferred from one force to another force, as a member of either of those forces, and “period of authorised use” means the period during which such use is authorised;
“cyclinder capacity” means the cylinder capacity of the engine of a vehicle calculated in accordance with the regulations from time to time in force under the Vehicles (Excise) Act 1971;
“motor bicycle” means a mechanically propelled bicycle (including a motor scooter, a bicycle with an attachment for propelling it by mechanical power and a mechanically propelled bicycle used for drawing a sidecar);
“motor car” means a mechanically propelled vehicle other than a motor bicycle and, accordingly, includes a mechanically propelled tricycle;
“year” means a period of twelve months beginning on such date as may be determined by the police authority;
and a reference to a motor vehicle owned by a member of a police force is a reference to such a vehicle kept and used by him.

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Source: https://www.legislation.gov.uk/uksi/1987/851/schedule/8/paragraph/1 (the official version)
Page: https://openlegislation.uk/police-regulations-1987/schedule-8/paragraph-1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.