Motorway signage.Does anyone know..?

[Shockingdog]

Can anyone tell me what are the yellow/black triangles,circles and squares that are on some of the large blue motorway signs ?

 

[oldish hippy]

Some direction signs have small coloured shapes patched on - a circle, square, diamond or triangle - in black and yellow. These are motorway diversion routes. In the event of a motorway being closed, "trigger signs" would be placed (or in some locations, opened out as they are permanent fixtures) to instruct drivers to follow a certain shape on signs to rejoin the motorway at the next junction.

There are a range of different shapes to allow diversions for opposing directions and different motorways to cross without conflicting. Often the symbols are stuck haphazardly onto existing signage.

 

[robjk]

Can anyone tell me what are the yellow/black triangles,circles and squares that are on some of the large blue motorway signs ?

I think they may be part of a diversion route. I have seen diversions where the first sign says follow a certain symbol.

Rob

 

[scampa]

(I agree with Hippy!)

Sometimes they are displayed permanently on motorway signs, but you only need to take notice when a diversion is put into action.

 

[caspar]

Can anyone tell me what are the yellow/black triangles,circles and squares that are on some of the large blue motorway signs ?

I think they're to advise that if you don't know what they mean you may well be lost!