The section between Pelaw and Jarrow Oil Terminal is interesting, as it would have been much easier to allow shared working rather than have it totally segregated. The single track sections between Hebburn and Jarrow and Jarrow and Simonside are what limits more trains being run on the South Shields line, and there is normally only 2 oil trips per day in each direction, which could easily fit in between the Metro services. BR freight used to run to Fawdon and Callerton, so not really sure why BR didn't allow the Metro to use the line between Pelaw and Jarrow.
Re-doubling was apparently on the cards around 2006, but seems to have been dropped as there has been no sign of any work starting.
To me, there seemed to be difficulties with the idea of running the oil tanks over a doubled Metro line. At the Pelaw end, I imagine that a train of empties heading out of Jarrow, waiting at the signal to join the main line at Pelaw, would be blocking both Metro running lines. Similarly at the Jarrow end, when assembling the train of empties (which is very long), there is a lot of shunting around which might involve the train occupying the South Shields-bound line.
One change I was surprised they didn't do on the Tyne Dock line when they restored the curve at Boldon N to Boldon E junction, was to have two tracks in the Green Lane area (which there's seems to be room for), enabling, for example, a train leaving Tyne Dock to wait at Brockley Whins to gain access to the main line towards Gateshead, while another train enters the branch from the Sunderland direction.
SGS.
http://www.flickr.com/photos/stuartstransport/
Last edited: