Vienna has five main underground lines, each identified by a number and a color. I use the orange U3 line most often because it stops at Westbahnhof, a major train station near where I live. It takes me into the city center and connects me to many museums, shops and other neighborhoods. I also sometimes take the U6, U4 or U2, depending on where I need to go!
When the subway doesn't go quite where I need it to, I take a bus. Vienna also has an extensive tram system, called the Straßenbahn, which you can often see travelling along the city's beautiful streets. Some people also get around by bicycle or electric scooter, and, of course, there are cars. But public transportation is how many people travel around the city every day. Subway trains come very frequently, often just a few minutes apart from each other, so you rarely have to wait long!
Something else I have noticed is how often people walk in Vienna. I walk to the grocery store, to cafés, to museums and sometimes even to appointments. In the United States, especially in places like Oklahoma where many people depend on cars, it is quite normal to drive thirty minutes just to get to a grocery store. In Vienna, shops, schools, doctors' offices and restaurants are often close enough to reach on foot. The city is designed in a way that makes walking and using public transportation easy.
I really like having a whole network of school buses, trains and sidewalks connecting the city, and have really enjoyed not needing a car to get around. It is a wonderful way to explore Vienna and see a little more of the city every day!