Various kids of visa are available in oslo. Some are good for a day, while other are for three day or a week . They all allow unlimited travel on the local buses and subway. these xxx are useful for tourists who want to visit different parts of the city. These is also another kind of weekly xxxx that allows unlimited travel on buses and trains and boats anywhere in the country. This is quite expensive, but it is worth getting if you are planning to move around the country a lot. Otherwise, it is better to pay separately for each trip.