A | B | C | D | E | F | G | H | CH | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9
The German federal motorways are now numbered according to a clear system. Since the mid-1970s there has been a numbering system for motorways, which sets out which number is replaced by a new motorway. Motorways with a single-digit number (e.g. A 1) are of national or even cross-border significance. Highways with a two-digit number (e.g. A 20) are usually of overriding national importance. Highways with three digits (e.g. A 999) are generally of regional or urban significance; often these motorways are feeders or detours. If there is more than one digit, the first digit indicates the approximate location of the motorway (A 10 to A 19 for Berlin; A 20 in the north to A99 in the south, A 100 for Berlin; A 200 in the north to A 999 in the south). Usually highways with even numbers predominantly run east–west, and those with odd numbers run north–south. Exceptions include the A14 and the A15.
A 1 to A 9
| Highway shield | Expressway Name | Connects | Length (km) |
Length (mi) |
Status | Map |
|---|---|---|---|---|---|---|
 A 1
|
Vogelfluglinie, Hansalinie, Ruhrtangente, Kölner Ring, Eifelautobahn | Heiligenhafen – Lübeck – Hamburg – Bremen – Osnabrück – Münster – Hamm – Dortmund – Hagen – Wuppertal – Remscheid – Leverkusen – Cologne – Blankenheim
Kelberg – Trier – Saarbrücken |
748 | 465 | current
under construction: Danish border – Puttgarden planned: Blankenheim – Kelberg |
|
 A 2
|
Warschauer Allee, Schalkeschleichweg | Oberhausen – Bottrop – Gelsenkirchen – Recklinghausen – Dortmund – Hamm − Bielefeld – Hannover – Braunschweig – Magdeburg – AD Werder | 473 | 294 | current | 
|
 A 3
|
Hollandlinie, Rechtsrheinische Autobahn, Kölner Ring, Spessartautobahn, Donautalautobahn | (Arnhem A12 –) Emmerich – Oberhausen – Duisburg – Düsseldorf – Leverkusen – Cologne – Limburg an der Lahn – Wiesbaden – Frankfurt − Aschaffenburg – Würzburg – Nuremberg – Regensburg – Deggendorf – Passau (– A8 Linz) | 769 | 478 | current | 
|
 A 4
|
Hollandlinie, Kölner Ring, Oberbergische Straße | (Maastricht A76 –) Aachen – Cologne – Olpe – Krombach
AD Kirchheim – Eisenach – Erfurt – Jena – Gera – Chemnitz – Dresden – Görlitz (– A4 Wrocław) |
583 | 362 | current | 
|
 A 5
|
HaFraBa, Bergstraßenautobahn, Rheintalautobahn, Rechtsrheinische Autobahn | AD Hattenbach – Frankfurt – Darmstadt – Heidelberg – Karlsruhe – Freiburg im Breisgau – Weil am Rhein (– Basel A2)
(Mulhouse A36 –) AD Neuenburg |
440 | 270 | current | 
|
 A 6
|
Neckarlinie, Kraichgau-Autobahn, Via Carolina | (Paris A320 –) Saarbrücken – Kaiserslautern – Mannheim – Heilbronn – Nuremberg – Amberg – Waidhaus (– Prague D5) | 484 | 301 | current | 
|
 A 7
|
HaFraBa, Nord-Süd-Achse, Rhönautobahn / -linie | (Aarhus E45 –) Flensburg – Neumünster – Hamburg – Hannover – Göttingen – Kassel – AD Hattenbach – Fulda – Würzburg – Ulm – Memmingen – Füssen (– Reutte/Fernpass) | 962 | 598 | current | 
|
 A 8
|
Saar-Autobahn, Albauf- bzw. -abstieg, Salzburger/Wiener Autobahn | (Luxembourg A13 –) Perl – Saarlouis – Neunkirchen (Saar) – Pirmasens
Karlsruhe – Stuttgart – Ulm – Augsburg – Munich Munich – Rosenheim − Bad Reichenhall/Piding (– Salzburg A1) |
505 | 314 | current | 
|
 A 9
|
MüLeiBerl, Berliner Autobahn, Nürnberger Autobahn | AD Potsdam – Dessau – Leipzig – Hof – Bayreuth – Nuremberg – Ingolstadt – Munich | 530 | 330 | current | 
|
| Total Length | 5,494 | 3,414 | ||||
A 10 to A 19
| Highway shield | Expressway Name | Connects | Length (km) |
Length (mi) |
Status | Map |
|---|---|---|---|---|---|---|
 A 10
|
Berliner Ring | AD Barnim – AD Spreeau – AD Potsdam – AD Werder – AD Havelland – AD Kreuz Oranienburg – AD Barnim | 196 | 122 | current | 
|
 A 11
|
Berlinka | (A6 Szczecin–) Pomellen – Eberswalde – AD Barnim | 110 | 68 | current | 
|
 A 12
|
Autobahn der Freiheit | AD Spreeau – Frankfurt (Oder) (– A2 Poznań) | 58 | 36 | current | 
|
 A 13
|
AK Schönefeld – Lübbenau/Spreewald – Senftenberg – Dresden | 151 | 94 | current | 
| |
 A 14
|
Altmarkautobahn, Mitteldeutsche Schleife | Wismar – Schwerin – Ludwigslust – Karstädt
Lüderitz – Wolmirstedt |
333 | 207 | current
under construction and planned: Karstädt – Stendal – Lüderitz under construction: Wolmirstedt – Magdeburg |
|
 A 15
|
Spreewaldautobahn | Lübbenau/Spreewald – Cottbus – Forst (– A18 Wrocław) | 64 | 40 | current | 
|
 A 16
|
Leipzig-Lausitz-Achse | Leipzig – Torgau – Hoyerswerda – Weißwasser (– A18 Wrocław) | Planning abandoned; cancelled by 2011 | |||
 A 17
|
Via Porta Bohemica / Prager Autobahn | Dresden – Heidenau – Pirna – Bad Gottleuba (– D8 Prague) | 45 | 28 | current | 
|
| Bautzen – Zittau (– D35 Liberec) | Cancelled in the 1990s; partially built as B 178 | |||||
 A 18
|
Lausitzautobahn (?) | Cottbus – Görlitz – Zittau | Cancelled by 1992; partially built as B 99 and B 115 | |||
 A 19
|
Rostock – AD Wittstock/Dosse | 123 | 76 | current | 
| |
| Total Length | 1,080 | 670 | ||||
A 20 to A 29
| Highway shield | Expressway Name | Connects | Length (km) |
Length (mi) |
Status | Map |
|---|---|---|---|---|---|---|
 A 20
|
Küstenautobahn, Nordwestumfahrung Hamburg, Ostseeautobahn | Bad Segeberg – Lübeck – Wismar – Rostock – Greifswald – Neubrandenburg – AD Kreuz Uckermark | 345 | 214 | current
planned: Westerstede – Bremerhaven – Glückstadt – Bad Segeberg |
|
 A 21
|
Ostumfahrung Hamburg | Nettelsee – AK Bargteheide | 56 | 35 | current
under construction and planned: Kiel – Nettelsee planned: Bargteheide – Geesthacht – AD Handorf |
|
 A 22
|
Küstenautobahn | Westerstede – Bremerhaven – Stade | Planning abandoned; renamed to A 20 in 2010 | |||
 A 23
|
Westküstenautobahn | Heide – Itzehoe – Pinneberg – Hamburg | 96 | 60 | current | 
|
 A 24
|
Hamburg – AK Schwerin – AD Wittstock/Dosse – AD Havelland (Berlin) | 237 | 147 | current | 
| |
 A 25
|
Marschenlinie | Hamburg – Geesthacht | 18 | 11 | current
planned: Geesthacht – Geesthacht-Nord |
|
 A 26
|
Altes-Land-Autobahn, Hafenquerspange | Stade – Neu Wulmstorf | 24 | 15 | current
planned: Drochtersen – Stade under construction: Neu Wulmstorf – AK Hamburg-Hafen planned: AK Hamburg-Hafen – AD Hamburg-Stillhorn |
|
 A 27
|
Schellfischlinie, Blocklandlinie / -autobahn | Cuxhaven – Bremerhaven – Bremen – Walsrode | 162 | 101 | current | 
|
 A 28
|
Ostfriesenhighway | Leer – Westerstede – Oldenburg – Stuhr (– Bremen) | 97 | 60 | current | 
|
 A 29
|
Jadelinie | Wilhelmshaven – Oldenburg – AD Ahlhorner Heide | 95 | 59 | current | 
|
| Total Length | 1,130 | 700 | ||||
