In these Regulations–

• “build-out” means a work for narrowing a carriageway constructed on one side of that carriageway as an extension of or adjacent to the verge, footway or cycle track;

• “chicane” means a series of two or more build-outs constructed on alternate sides of the carriageway and not opposite one another;

• “gateway” means an object or structure constructed on the verge, footway or cycle track of a highway for the purpose of indicating the presence in a length of highway of traffic calming works of a description prescribed by these Regulations or specially authorised by the Secretary of State or of road humps;

• “island” means a work without facilities for pedestrians constructed in a carriageway to reduce carriageway width or to deflect the flow of vehicular traffic;

• “overrun area” means an area of carriageway so constructed of textured or coloured material as to appear to narrow that carriageway;

• “pinch point” means build-outs constructed on both sides of a carriageway opposite one another;

• “rumble device” means a part of the carriageway constructed of material intended to generate noise or vibration in a vehicle passing over it;

• “traffic sign” has the same meaning as in section 64 of the Road Traffic Regulation Act 19842; and

• “20 miles per hour zone” means a zone comprising one or more roads in relation to which the following conditions are satisfied–

  1. a

     a speed limit of 20 miles per hour applies to each road within the zone;

  2. b

     a traffic sign of the size, colour and type shown in diagram 674 of the Traffic Signs Regulations 19943 is placed at each entrance to the zone for vehicular traffic.