Submitted by scnartup, who says:

Similar stuff to the video of a day in the life of London’s Underground in Budapest. Metro line M4 is not shown since it opened in 2014 and the video was made in 2012. One dot represents one vehicle [as opposed to the London video, where 1 dot represents a single rider – CAM].

Legend:

• white dot: night bus
• blue dot: bus
• red dot: trolley bus
• yellow dot: tram
• bigger dots: metro (yellow: M1, red: M2, blue: M3) and suburban railway (green)

Transit Maps says:

Again, simply mesmerising stuff here. I love how the “skeleton” of the transit network is formed as the peak period hits, but my favourite part is when the first commuter trains trundle in from the edge of the map early in the morning as the night buses start to disappear off the map.