
der Ausstieg
exit
Leaving a vehicle or building; also the door or place where one gets out.
Der Ausstieg befindet sich in Fahrtrichtung rechts.
The exit is on the right in the direction of travel.
exit / withdrawal
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exit
Leaving a vehicle or building; also the door or place where one gets out.
Der Ausstieg befindet sich in Fahrtrichtung rechts.
The exit is on the right in the direction of travel.

withdrawal
The ending of participation in a project, system, organization, or technology.
Der Ausstieg aus der Atomenergie ist ein zentrales politisches Ziel.
The withdrawal from nuclear energy is a central political goal.

leaving
Leaving a particular social group or scene, especially a radical or addictive community.
Das Buch handelt vom schwierigen Ausstieg eines Mannes aus der Neonazi-Szene.
The book is about a man's difficult leaving of the neo-Nazi scene.
'Der Ausstieg' (exit/withdrawal) comes from the separable verb 'aussteigen' (to get out / to leave). The basic meaning is to leave a vehicle or a place. This idea of leaving is also used in the figurative meanings.
Wir müssen an der nächsten Haltestelle aussteigen.
We have to get out at the next stop.
In the figurative meanings, the preposition 'aus' (from/out of) with the dative is almost always used to name what one is leaving. People speak of 'Ausstieg aus der Atomenergie' (withdrawal from nuclear energy) or 'Ausstieg aus einer Szene' (leaving a scene).
Die Regierung plant den schrittweisen Ausstieg aus der Kohleenergie.
The government is planning the gradual withdrawal from coal energy.
In the context of buses and trains, 'der Ausstieg' (the exit) often specifically refers to the door through which one gets out. Announcements like 'Der Ausstieg ist in Fahrtrichtung links' (the exit is on the left in the direction of travel) are very typical.
Bitte blockieren Sie nicht den Ausstieg.
Please do not block the exit.
When it is about ending projects or technologies, 'Ausstieg' (withdrawal) is often combined with adjectives such as 'schrittweise' (gradual), 'sofortig' (immediate), or 'geplant' (planned).
Umweltschützer fordern den sofortigen Ausstieg aus fossilen Brennstoffen.
Environmentalists are calling for the immediate withdrawal from fossil fuels.
exit / outcome
Ausgang generally refers to the designated door or route used to leave a room or building. Ausstieg, by contrast, emphasizes the place and process of getting out, especially from a vehicle.

Im Zug warten die Reisenden vor dem Ausstieg auf der linken Seite.
On the train, the travelers waited on the left side in front of the exit.
Im Bahnhof folgen die Reisenden den Schildern zum Ausgang.
At the train station, the travelers followed the signs to the exit.