Did you know that speed limits vary for different classes of vehicle?

Speed limits are set for the safety of all road users and they vary according to the class of vehicle and the type of road. The simple way to avoid speeding penalties is to know your limits and drive safely within them. 
Please remember that the speed limit is not a target and you should drive at an appropriate speed for the road and weather conditions.

These are the national speed limits and apply to all roads unless signs show otherwise.

Street lighting means a 30 mph limit unless signs show otherwise. This applies to all traffic on all roads in England and Wales (only Class C and unclassified roads in Scotland) with street lighting. 

Built up areas generally have roads with street lights. Unless signed otherwise, the speed limit is always 30mph, no matter the number of lanes.
Single carriageway is an undivided road with no centre barrier.
Dual carriageway is a two way divided road with a central barrier that you are able to cross from side roads.
Motorway is a two way divided road with a central barrier containing slip roads. It is only possible to access a motorway via slip roads and there is no crossway traffic.

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