Motorway Advisory Speed signs

[covboy]

Anybody know if there is a set criteria for the need of advisory speed/bend signs.

The reason I ask, travelling north on the M5 the other night from J4 – a journey I used to make daily when I worked in that neck of the woods – I noticed towards the top of the climb up to Frankly Services there had appeared a 50mph and RH bend advisory sign.

After 40+ years(?) of this motorway being open has it suddenly become dangerous for what is a very gentle curve to be taken at 70mph.

Another sign of the nanny state ?

[covboy]

bob parr said:

There could have been a number of factors for the advisory limits to be set, am sure one of our control room bods will be along to update, but it might have been:
Heavy Rain
Standing Water
Queuing Traffic
Reports of debris / pedestrians / animals in the carriageway
High Winds
Snow / Ice
Breakdown on restricted hard shoulder
Diesel / Oil spill
Roadworks crew setting up
We might have been on the H/S dealing with an incident and requested them just to slow the traffic down

Anything really

Not talking illuminated signs - fixed 50mph inside triangle with bend sign underneath

[covboy]

Hi Fif

Not sure about the one at J4. This one is towards the top of the hill after J4 about 2 miles before Frankly services