# The Coal and Other Mines (Locomotives) Order 1956, Paragraph 22


A red light visible at a distance of two hundred feet shall be attached—
(a) at the rear of the last vehicle of every train in a mine; and
(b) at the rear of every locomotive in a mine when it is not attached to a vehicle:
Provided that nothing in this regulation shall apply in any mine of stratified ironstone or shale to any train or locomotive within twelve hundred feet of any working face.

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Source: https://www.legislation.gov.uk/uksi/1956/1771/schedule/FIRST/paragraph/22 (the official version)
Page: https://openlegislation.uk/coal-and-other-mines-locomotives-order-1956/schedule-FIRST/paragraph-22
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.