RE: Tyne and Wear Metro
You have to remember the Jarrow tanks will still need to run, likely a temporary crossover will have to installed first at Pelaw and again at Jarrow to enable the tanks to run on the up whilst the down is relaid and mast seats sank. The NR line hasn't been touched in years and with (at peak) daily weights of 6500t at low speed has pretty much knackered it!