# The Lydney and Parkend Light Railway (Extension and Amendment) Order 1994, Paragraph 43


When a train either occupies a track circuit or operates a treadle the sequence of events to close the crossing to road traffic shall automatically begin. The sequence shall be:–
(a) the amber lights shall show and the audible warning shall begin. The lights shall show for approximately 3 seconds;
(b) immediately the amber lights are extinguished the intermittent red lights of the traffic light signals and the pedestrian warning lamps shall show;
(c) 4 to 6 seconds later the barriers shall begin to descend and shall take a further 6 to 10 seconds to reach the lowered position.

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Source: https://www.legislation.gov.uk/uksi/1994/1331/schedule/3/paragraph/43 (the official version)
Page: https://openlegislation.uk/lydney-and-parkend-light-railway-extension-and-amendment-order-1994/schedule-3/paragraph-43
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.