Simulation of double-yellow signal aspect sequences in the Stratford area (RR-OPS-D-VAP-GE-8)

The Stratford area GE resignalling includes a number of close-up signals i.e. signals which may display a double-yellow aspect when the signal in front is displaying double-yellow. Train running in this area was simulated using VISION to quantify the effects of setting either 5 or 7 signals ahead of a...