These screenshots were taken many years ago. They show a set of possibilities of the Traffic Screensaver. Now, having the WTraffic project in an almost ready state, you have a better option to check, what it can show for you, how it looks like, when Traffic runs as a screensaver (or runs in a window): start the Full demo, or browse among the shorter demo scenes.
Don't forget: Traffic is not only a player for the transportation scenes, it is also a tool for collecting the vehicle pictures, to enrich them with animations and variations, to create/edit the 'program' to specify the scenes: the consists, the movements, the backgrounds etc. .