http://transport.data.gov.uk/0/category/road/a A Road http://transport.data.gov.uk/0/category/road/road Road http://transport.data.gov.uk/0/category/road/b B Road http://transport.data.gov.uk/0/category/road/c C Road http://transport.data.gov.uk/0/category/road/unclassified Unclassified Road http://transport.data.gov.uk/0/category/road/motorway Motorway http://transport.data.gov.uk/0/category/road/rural Rural Road http://transport.data.gov.uk/0/category/road/urban Urban Road http://transport.data.gov.uk/0/category/road/principal Principal Road http://transport.data.gov.uk/0/category/road/trunk Trunk Road