List all motorways the API knows about (e.g. ["A1", "A2", ...]), in the API's
order. Each id is trimmed, blank ids are dropped and duplicates removed (the first
occurrence is kept): the API lists both "A60" and "A60 ", and since list() trims
its road id, both name the same road.
List all motorways the API knows about (e.g. ["A1", "A2", ...]), in the API's order. Each id is trimmed, blank ids are dropped and duplicates removed (the first occurrence is kept): the API lists both "A60" and "A60 ", and since
list()trims its road id, both name the same road.