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Variable Message Sign

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For detailed information about this topic, see RoadsUK - VMS
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A variable message sign can display differing messages depending on conditions. VMS have been installed on motorways since the late 1960s, and more recently on other high quality roads. They originally contained small symbols or words (such as "fog"), but have since expanded to include larger variants that display full messages, generally warning about traffic or travelling conditions ahead.

The current guidelines for VMS messages are set out in the TSRGD.


Example of a VMS


Example of a VMS



Variable Message Sign
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