Transport network
Meridian line data from Ordnance Survey: motorways, A roads, B roads, minor roads and railways
Length of motorways, main roads (A roads, B roads) and rail network (m)*
No. of main roads leading to the city centre: feeder road (N)*
No. of main roads around the city centre: ring road (N)*
Number of main road connections between feeder roads: distributary road (N)*
Radial extent of the ring roads (m)*
Shortest distance from motorway and rail line to inner ring road (m)#
Minor road density in four zones around the city centre (see above) (m/m2)#
Junction density of minor road network in four zones around the city centre (see above) (N/m2)#
Mean altitude (m) per network type in five equally spaced altitude classes (in increments of
35 m)y