Editing Variable-message sign (section)

===United Kingdom===
<gallery mode="packed" heights="100" caption="Examples of variable message signs in the UK">
File:UK traffic sign 6001.jpg|Temporary advisory speed limit of 50 mph.
File:UK traffic sign 6006.10.jpg|End of temporary restrictions.
File:UK traffic sign 6006.5.jpg|Lane 2 is closed ahead.
File:UK traffic sign 6006.1.jpg|Lane 2 and 3 are closed ahead.
File:UK traffic sign 6006.3.jpg|Lane 1 is closed ahead.
File:UK traffic sign 6006.7.jpg|Lane 1 is closed ahead.
File:UK traffic sign 6003.jpg|Leave the motorway at the next junction.
File:UK traffic sign 6006.4.jpg|Both lanes are closed.*
File:UK traffic sign 6006.2.jpg|All three lanes are closed.*
File:UK traffic sign 6006.6.jpg|All 4 lanes  are closed.*
File:UK traffic sign 6006.8.jpg|Risk of ice ahead.
File:UK traffic sign 6006.9.jpg|Risk of Fog ahead
File:UK traffic sign 6031.1.jpg|Do not use the lane below the signal.
</gallery>
<nowiki>*</nowiki> Do not enter the motorway when the red lamps are flashing in pairs from side to side.

On 27 March 1972, the first motorway computer-controlled warning lights in the UK, with 59 miles on the M6 from [[Broughton, Lancashire]] to [[Barthomley]], on the Cheshire boundary, and 26 miles on the M62 east of Whitefield, was switched on by [[Michael Heseltine]] and [[Baron Grey of Codnor|Charles Legh Shuldham Cornwall-Legh, 5th Baron Grey of Codnor]] at the headquarters of [[Cheshire Constabulary]] on Nuns Road.<ref>''Birmingham Daily Post'' Tuesday 28 March 1972, page 7</ref><ref>''Chester Chronicle'' Thursday 30 March 1972, page 2</ref>

It was centred at a police computer centre at [[Westhoughton]], that connected to police stations in Preston and Chester. The Chester site was soon be connected to the M53 and M57.<ref>''Cheshire Observer'' Friday 31 March 1972, page 21</ref> Four other regional computer centres would be opened at Perry Barr near the M6, [[Scratchwood]] near the M1, at [[Hook, Hart|Hook]] near the M3, and at [[Almondsbury]] near the M4. Most British motorways would be covered by 1975. The system was designed by GEC and had taken five years to design.<ref>''Times'' Tuesday March 28 1972, page 5</ref>