(8) The display of a blank black or grey face on a variable message sign accompanied by four flashing lamps of the kind mentioned in paragraph (6) shall indicate to drivers that they should take special care.
(9) A variable message sign which displays alternately the signs shown in diagrams 7023 and 7024 shall be manually operated.
Signed by authority of the Secretary of State
David Jamieson
Parliamentary Under Secretary of State,
16th December 2002
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