
The rules on speed limits for cars are relatively simple.
- Default limits for cars are 50 kmh inside towns, 100 kmh outside, and 130 kmh on motorways
- Other limits may apply, of course, as indicated by signage
- 30 kmh zones are commonplace in Vienna, particularly on side streets
- Note that different limits apply to other vehicles and cars with trailers etc.
- See also:
Speed limits in Vienna
Across the whole of Austria, anywhere within the defined perimeter of a settlement has a default 50 kmh limit (just under 31 mph) for cars, unless otherwise indicated.
This perimeter is always marked by the “Ortstafel” city sign. It looks like this when you enter Vienna:

(To answer the obvious question: why does it say Wien and not Vienna?)
The sign looks like this when you leave the city:

(But why would you want to leave?)
The 50 kmh limit for cars is rarely explicitly indicated on road signs as you cross the city perimeter or drive around Vienna. As the default limit, you’re expected to know it.
What are the exceptions?
Limits that deviate from this standard are given using typical speed signs. This says you’re now entering a 30 kmh (just over 18 mph) limit:

(No prizes for guessing the German word for zone)
This tells you that the 30 kmh zone now ends, which means you’re back in the 50 kmh zone for cars in Vienna unless another limit is given:

(30 kmh areas are very common away from larger roads)
The 30 kmh restriction may also be painted in white on the road itself, as a helpful reminder.
A fair few areas in Vienna now have this lower speed limit, and it’s rapidly becoming the standard on side streets.
This means you can find yourself going from 30 to 50 to 30 to 50 if you cross, for example, suburban areas of the city perpendicular to the main roads.
You also find higher limits now and then – typically 70 kmh (just over 43 mph) or 80 kmh (just under 50 mph) – on some of the big roads and autobahns (motorways) that cross or skirt the city. Don’t forget you’ll need a toll sticker if you want to use your car on a motorway.
Motorway speed limits
For the record, the default speed limit for cars on roads outside settlements is 100 kmh, rising to 130 kmh on autobahns (motorways).
Austria has discussed raising the motorway speed limit and also lowering it, with opinions divided along the usual lines (politics, car lobby, environmental lobby).
Again, remember those defaults only apply if no other limit is indicated.
For example, autobahns passing near or through cities tend to feature variable speed restrictions, and you may come across weather-dependent temporary speed limits (particularly in Austria’s rural and Alpine areas).
Here’s perhaps the most important thing to remember: Austria does not have the German system, where stretches of autobahn allow cars, for example, to travel faster than the recommended speed of 130 kmh.
(You’ll occasionally find the autobahn police sitting close to the border with Germany to provide written reminders of this fact in the form of speeding tickets.)
For the latest information on speed limits for cars, cars with trailers, mopeds, and other vehicles, see the Austrian government’s helpful English-language information page.