Known as a subway, most operate on electrical power. Being underground they are not impeded by surface traffic.
Guildford hasn't got an Underground system, so no underground trains.
All trains are noisy. Underground trains sound noisier because the tunnel reflects the noise back.
Yes, tourists and residents can film trains in the London Underground.
No. Luxor, Egypt has only above-ground trains.
Depends what you mean: Firstly, what are 'normal' trains and why are underground trains not 'normal'? Can non-LU trains run on the tube network? A: No, they will not fit in the tunnels Does LU have an intergrated transport network with non-LU trains? Yes, sometimes on adjacent platforms
the answer is metro
Yes. The Underground does cover much area, but you cannot take the Underground from London to Oxford.
Subways allow commuters to travel to the city via trains that go underground so as not to interfere with above ground transportation.
Electric traction motors in each car via a "3rd rail" feeding electricity.
Overhead trains, underground trains, buses, taxis, hire cars, motor cars, motor cycles, pedi-cabs, bicycles or you could walk. Much the same as any other city.
Americans call them 'The Subway', the British call them 'The Underground' or 'The Tube'.
Underground stations are used to catch trains. There is no point in visiting them.