Frankfurt's Trams, U bahn and S bahn are a bit plain compared to other German citys but are still interesting. The routes the trains take around the center of Frankfurt is abit confusing.
The U bahn goes 40 mph and has medium acceleration.
The S bahn runs underground and is similar to the U bahn in the city, outside the center it runs as the stopping train service on the mainline. It goes 70 mph and has medium acceleration.
The trams only run on the street and go rather slow and have a top speed of 30 mph.
The Airport has a CX-100 transit train system that goes between Depot, Terminal 2, an unused station, Terminal 1 and a saterlite terminal. The transit train has two caridges which open on seperate sides, one for land side and one for air side, these two parts are kept segragated. As well as this there is a very short cable pulled transit train to one of the car parks.