# The Road Vehicles (Authorisation of Special Types) (General) Order 2003, Paragraph 10

Extent: E+W+S

Between sunset and sunrise, and at all times when visibility is seriously reduced, any end marker or side marker must be kept illuminated by a lamp which—
(a) makes the marker readily visible from a reasonable distance; and
(b) is shielded so that its light (except as reflected from the marker) is not visible to other persons using the road.

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Source: https://www.legislation.gov.uk/uksi/2003/1998/schedule/8/paragraph/10 (the official version)
Page: https://openlegislation.uk/road-vehicles-authorisation-of-special-types-general-order-2003/schedule-8/paragraph-10
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.