On 02/05/18 13:03, Craig Wallace wrote:
A 20 sign with a green circle is advisory. A 20 sign with a red circle
is a legal limit.
Some advisory limits are signed as "Slow zone" or similar.
Advisory signs can be put up with no formality. Legal speed limits
require a traffic regulation order, with the associated public
announcements and public consultation periods. That's the main reason
you are likely to see advisory signs.
In another thread, on a different forum, this came up for cycle lanes.
A lot of UK cycle lanes are advisory, meaning cars can park on them with
impunity, so they are often of limited use.
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