# The Road Vehicles Lighting Regulations 1989, Part I: Requirements relating to obligatory front retroreflectors and to optional front retro reflectors to the extent specified in part ii

Extent: E+W+S

1 Number:
Two
2 Position–
(a) Longitudinal:
No requirement
(b) Lateral–
(i) Maximum distance from the side of the trailer:
150 mm
(ii) Minimum separation distance between a pair of front reflectors:
600 mm or, if the overall width of the trailer is less than 1400 mm, 400 mm
(c) Vertical–
(i) Maximum height above the ground:
900 mm or, if the structure of the trailer makes this impracticable, 1500 mm
(ii) Minimum height above the ground:
250 mm
3 Angles of visibility–
(a) Horizontal:
30° outwards and 5° inwards
(b) Vertical–
(i) Any case not covered by sub-paragraph (ii):
10° above and below the horizontal
(ii) Where the highest point of the reflecting area is less than 750 mm above the ground:
10° above and 5° below the horizontal
4 Alignment:
To the front
5 Markings:
An approval mark
6 Size of reflecting area:
No requirement
7 Colour:
White

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Source: https://www.legislation.gov.uk/uksi/1989/1796/schedule/21/part/I (the official version)
Page: https://openlegislation.uk/road-vehicles-lighting-regulations-1989/schedule-21/part-I
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.