It has to be said that adding overhead cabling above train-tracks is far from trivial. Back in 1996, or so, I was on a work-placement with British Rail and our

It has to be said that adding overhead cabling above train-tracks is far from trivial. Back in 1996, or so, I was on a work-placement with British Rail and our project was auditing the bridges and tunnels along various routes. In order to fit overhead cables over the tracks, and over the trains, there were are lot of bridges that had to be raised, adjusted, or replaced to give clearance room.