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Stulz said:There are no UNRESTRICTED or DE-RESTRICTED roads in the UK. The maximum National speed limit is 70mph for Roads governed by Motorway Regulations and a few dual carriageways where it is deemed safe.
Otherwise all A roads should be used in accordance with the Highway Code or otherwise posted speed restictions.
The sign posted above, often called the National Speed limit, is a red herring, it only applies to the maximum speed that can be legally driven on that type of road.
For single carriageway A roads that can be from 20mph to a maximum of 60mph. However the 60mph limit is only applicable on roads that have safety barriers. If no barrier exists, or the road passes through a residential area that has reduced Lamp height, then the limit is 50mph. If the A road is a dual carriagway for more than 1 mile, then the limit is 60mph for unbarriered carriageways, or 70mph for unlit but barriered carriageways.
National Speed limit for unclassified roads is not 70mph as some seem to think, it is 40mph if unlit, but 30mph if illuminated, unless it is more than one carriageway wide (but these are usually classified then)
Car Derived Vans are required to abide by the same limits as Cars, Panel Vans, and all LGV's up to a GVW of 5.5T are limited to 10mph below the Car/CDV limit or a maximum 60mph depending on which is applicable to the road.
LGV's are restricted to 30mph, 40mph and a maximum of 56 mph depending on the road.
All that information I have just copied from a Handbook for Traffic Police that my friend has in his car..He's a traffic cop for his sins
A traffic cop - you are joking? I do not think all of that lot is current ... If it ever was... In England anyway.
We actually mean 'National speed limits apply' with regard to the 'de-restriction' sign ..as in cancelling the previous speed restriction and not by numerical visual signage imposing another speed rate.
Find more than you ever want to know here (see diag. 671):-
http://www.opsi.gov.uk/si/si2002/20023113.htm#5
Get the deal on current speed limits and the CORRECT weights, plain and simple here (para.103):-
http://www.highwaycode.gov.uk/09.htm#103
Some interesting stuff here :-
http://www.abd.org.uk/speed_limit_signs.htm
Moves are, or have been afoot to further restrict on minor / unclassifieds... You will of course note that the limits are currently as per the Highway code. Hansard