Oslo Metro/T-Bane and Trams/Trikken

Here are clips in various locations of Oslo's T-Bane and trams.
In the last few minutes of the video you may notice tiny Norwegian flags on the trams and buses, as well as a lot of people dressed nicely. That's because those clips were taken on Syttende Mai (17th of May), which is Norway's Constitution Day. It's kind of like July 4th for the USA with lots of celebrations and parades across the country.