For Matthew...

Well, these are technically trams rather than trains... but I thought Matthew might be interested in them still... it's a cross between a train and a bus.

There's a green one... they share the road with cars and bicycles. So there are tram lines in the middle of the road, and more complicated traffic rules at junctions.

And here is a brown tram waiting at the traffic light for its turn. The brown trams are free for everyone apparently, sponsored jointly by the tourism board and the city council and maybe someone else.