Q. How many kilometres or miles of road are there in Great Britain?
A. In January 2001 Ordnance Survey calculated that the following kilometres (miles) of road existed in Great Britain:
motorways - 4 353 km (2 705.41 miles).
A Roads - 48 164 km (29 934.12 miles).
B Roads - 30 216 km (18 779.37 miles).
minor public roads - 314 392 km (195 395.89 miles).
pedestrianised streets - 278 km (172.78 miles).