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Tram Trains
How to build cheap transit in smaller towns
A few other cities, like Berlin, built viaducts (bridges that carry roads and railways over obstacles), while others, such as Cologne, have simply added platforms at their main stations to enable suburban trains to run through. Manchester’s Metrolink, which runs 60-meter-long units, can transport 15,000 per hour on its busiest section, while owing to its lower frequency Karlsruhe’s 75-meter-long tram-trains, as long as trams can feasibly get without causing unbearable problems for other road users, carries only 8,800. The purpose of the other tunnel was to put the city’s main east-west artery, a ten-lane road known as the Kriegsstraße, underground, and to build a boulevard on top where tram traffic can run uninterrupted by cars.
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