12 relations: A21 autoroute, A21 highway (Sri Lanka), A21 road (England), Autobahns of Austria, Autostrada A21 (Italy), Autovía A-21, Bundesautobahn 21, California County Routes in zone A, City Ring Route, Adelaide, List of highways numbered 21, List of highways numbered 21A, Road designation or abbreviation.
The A21 autoroute is a toll free highway in north western France it is also known as the Rocade Minière.
The A 21 road is an A-Grade trunk road in Sri Lanka.
For other roads with the same name see List of A21 roads. The A21 is a trunk road in Southern England, one of several which connect London and various commuter towns to the south coast.
The Austrian autobahns are controlled-access highways in Austria.
The Autostrada A21 is an Italian motorway, which connects Turin to Brescia, through the Po Valley and the city of Piacenza.
The Spanish Autovía A-21 is a proposed highway between Jaca, in Aragon, and Pamplona, in Navarre.
is an autobahn in Germany.
There are 27 routes assigned to the "A" zone of the California Route Marker Program, which designates county routes in California.
Adelaide has two city ring routes, that loop around the Adelaide city centre and North Adelaide, known as the Inner and Outer Ring Routes.
For roads named A21 see; List of A21 roads Route 21, or Highway 21, can refer to.
Route 21A, or Highway 21A, may refer to.
A road designation and a road name abbreviation are easy ways to refer to a road.