A4
A4 , A 4 or A-4 stands for:
- a standardized A4 format paper with the dimensions 210 mm × 297 mm (DIN 476 / ISO 216)
- the note a in the four-stroke octave, see note system
- a grade for civil servants in Germany, see Simple service
- the IATA code for the Argentine airline Southern Winds
- a military aircraft, see Douglas A-4
- a missile project in the Third Reich, see Unit 4 , better known under the name V2 .
- the series of the officially fastest steam locomotive in the world, see LNER class A4
- a vehicle model from the car manufacturer Audi, see Audi A4
- a platform from Volkswagen on which the Golf IV is built, alternatively also called PQ34
- as in materials engineering an abbreviation for a stainless steel, alternatively V4A known
- a gyroplane, see ZAGI A-4
- a level of difficulty in technical climbing, see technical climbing
- a System-on-a-Chip Apple A4 from the computer manufacturer Apple
- in mathematics the alternating group of order 4
- A4 , sea area in the GMDSS, see Global Maritime Distress Safety System # Sea areas A1 to A4
- an address in the Mannheim A-squares
Motorways and trunk roads:
- in Germany the federal motorway 4
- in Austria the Ost-Autobahn
- in Switzerland the Autobahn 4 (Switzerland)
- in Belgium the Autobahn 4 (Belgium)
- in Bulgaria the Awtomagistrala A4
- in France the A4 autoroute
- in Greece the Aftokinitodromos 4
- in Italy the Autostrada A4 (Italy)
- in Croatia the Autocesta A4
- in Lithuania the Magistralinis kelias A4
- in Luxembourg the Autoroute 4 (Luxembourg)
- in the Netherlands the Rijksweg 4
- in Poland the Autostrada A4 (Poland)
- in Portugal the Autoestrada A4
- in Romania the Autostrada A4 (Romania)
- in Serbia the Autoput A4
- in Slovenia the Avtocesta A4
- in Spain the Autovía A-4 (Autovía del Sur)
- in Ivory Coast the A4 (Ivory Coast)
- in Nigeria the A4 (Nigeria)
- the A4 Asia Highway from Pakistan to China
- in Australia the Capricorn Highway
ITU prefix:
