Submitted by Tobias, who says:

Trier’s not a big town (100,000 population), but it’s Germany’s oldest. Therefore many tourists are coming to visit and see the Roman buildings and ruins. I don’t know if they use the bus for that. See the plan attached.

Transit Maps says:

If Trier is like many other German towns that I’ve visited (and a quick look at Google Maps seems to confirm that it is), then the tourist-frequented historical core is very small and easily walkable, so I’d probably say that bus usage by visitors to the city is limited. For example, it’s just 500 metres (0.3 miles) from the Hauptbahnhof to the famous Porta Nigra and only about a kilometre until you reach the bank of the Moselle River. (Wisely, the map includes the river, which helps immensely with basic orientation.) 

Stylewise, this is a pretty typical German-style transit map, although with one idiosyncrasy that can make following routes a little difficult. Complex stops are rendered as hollow “J” or “C” shapes, with a gap in the middle – the stop’s label is often pushed into this gap to save a little bit of space. This can make it a little tricky to follow a route through the station and out the other side, as many route lines don’t maintain the same relative position on either side of the station. It’s not terrible, but it can create a little momentary confusion.

Like many diagrammatic maps the scale is flexible, with a vastly expanded city centre and compressed outer edges. The diamond in the middle of the map is roughly 500-600 metres along each side, while the farflung town of Morscheid at the bottom right of the map is some 18 kilometres (11 miles) by road from the Hauptbahnhof. I do like the way that the blue district/suburb/town names are applied directly to a stop if there’s only that one stop within that region: it prevents duplication of labels rather nicely.

Our rating: A little tricky to follow routes in complex parts of the map. Not outstanding, but pretty decent. Two-and-a-half stars.