I note end of the electrified tracks is just after the 95 mile point. Pan down sign just after 90 miles northbound and pan up sign around 93 miles southbound. IS there a restricted zone where pan up must take place or the unit has to continue on diesel?
The Power Changeover boards have been sited at locations where there is sufficient overlap, but more importantly, where Driver workload is minimal.
As an example, the Up direction power changeover boards are sited at Kilby Bridge. In the Down direction however, restrictive signals are often encountered at this location, and a risk has been identified of the power changeover being missed due to reacting to the signal, or vice versa. It was thus decided to carry out the power changeover earlier, at Wistow.
Although it is theoretically safe to raise the pan at any speed, the requirement is, in the event of a missed changeover, to wait until the train is next at a stand, and carry the changeover out statically. This must also be reported to control, presumably as more fuel may have been consumed than expected.