The national speed limit on a dual carriageway in the United Kingdom is 70 miles per hour (112 kilometers per hour)
. This limit applies to cars, motorcycles, car-derived vans up to 2 tonnes maximum laden weight (MLW), and to motorhomes or motor caravans not more than 3 long tons (3.05 tonnes) maximum unladen weight
. However, it is essential to note that speed limits are subject to change by road signs, and local councils can introduce their own speed limits, which must be clearly signed
