# Motor Vehicles (Construction and Use) Regulations (Northern Ireland) 1999, Regulation 15: Turning circle — buses


(1) This regulation applies to a bus first used on or after 1st April 1982.
(2) A vehicle to which this regulation applies shall be able to move on either lock so that, both with and without all its wheels in contact with the ground, no part of it projects outside the area contained between concentric circles with radii of 12.5m and 5.3m.
(3) In relation to a vehicle manufactured before 20th April 1999 paragraph (2) shall have effect as if the words “, both with and without all its wheels in contact with the ground,” were omitted.
(4) When a vehicle to which this regulation applies moves forward from rest, on either lock, so that its outermost point describes a circle of 12m radius, no part of the vehicle shall project beyond the longitudinal plane which, at the beginning of the manoeuvre, defines the overall width of the vehicle on the side opposite to the direction in which it is turning by more than 0.8m if it is a rigid vehicle or 1.2m if it is an articulated bus.
(5) For the purposes of paragraph (4) the two rigid portions of an articulated bus shall be in line at the beginning of the manoeuvre.

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Source: https://www.legislation.gov.uk/nisr/1999/454/regulation/15 (the official version)
Page: https://openlegislation.uk/motor-vehicles-construction-and-use-regulations-northern-ireland-1999/regulation-15
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.