"passenger vehicle" means a vehicle constructed or adapted for the carriage of passengers and their effects;
"pedal cycle" means a unicycle, bicycle, tricycle, or cycle having four or more wheels, not being in any case mechanically propelled unless it is an electrically assisted pedal cycle of such class as is to be treated as not being a motor vehicle for the purposes of the 1984 Act(a)[1];
"pedestrian zone" means an area—
(a) which has been laid out to improve amenity for pedestrians; and
(b) to which the entry of vehicles is prohibited or restricted;
"plate" means a sign which by virtue of general directions given in exercise of the power conferred by section 65 of the 1984 Act may be placed only in combination or in conjunction with another sign and which is supplementary to that other sign;
"police vehicle" means a vehicle being used for police purposes or operating under the instructions of a chief officer of police;
"primary route" means a route, not being a route comprising any part of a motorway, in respect of which the Secretary of State—
(a) in the case of a trunk road is of the opinion, and
(b) in any other case after consultation with the traffic authority for the road comprised in the route is of the opinion, that it provides the most satisfactory route for through traffic between places of traffic importance;
"primary signals" has the meaning given by regulation 43(5)(a);
"principal road" means a road for the time being classified as a principal road—
(a) by virtue of section 12 of the Highways Act 1980 (whether as falling within subsection (1) or classified under subsection (3)), or
(b) by the Secretary of State under section 11(1) of the Roads (Scotland) Act 1984; "public service vehicle" has the meaning given in section 1 of the Public Passenger Vehicles Act 1981(b)[2];
"reflectorised" means illuminated by the use of retroreflecting material;
"retroreflecting material" means material which reflects a ray of light back towards the source of that light;
"road maintenance vehicle" means a vehicle which—
(a) in England and Wales is specially designed or adapted for use on a road by or on behalf of a highway authority for the purposes of the Highways Act 1980 for the purposes of road maintenance; or
(b) in Scotland is specially designed or adapted for use on a road by or on behalf of a roads authority for the purposes of the Roads (Scotland) Act 1984 for the purposes of road maintenance;
"road marking" means a traffic sign consisting of a line or mark or legend on a road; "road works" means works for the improvement, alteration or maintenance of a road and includes, in relation to England and Wales, street works as defined by section 48(3) of the New Roads and Street Works Act 1991 and, in relation to Scotland, road works as defined by section 107(3) of that Act;
"route" includes any road comprised in a route;
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