Road network
Information about Britain’s roads: their extent, features and how their safety performance can be assessed.
'Smart Motorway' is a term used to describe various types of motorway that are not designed in the same way as a conventional motorway. There are three types of ‘Smart Motorway’, Controlled Motorways (CM), All Lane Running (ALR) motorways, and Dynamic Hard Shoulder Running (DHS) motorways. The cha...