Here in Cambridge, there is a very interesting bus route, a guided bus route (incidentally, the longest of its type in the world). It’s fascinating because the bus essentially mounts rails and then travels at a speed of about a hundred kilometers per hour, virtually without the driver’s involvement (he doesn’t even need to touch the steering wheel). Effectively, it’s like a tram or subway, only much simpler in design – it uses nearly regular buses (though they do have a small steering wheel on the side). Plus, unlike trams, they can always operate as a regular bus (which happens outside of this 25km segment).





