On 16 Jul, 14:05, D7666 wrote:
If DfT or H&S are really that concerned about moving trains in this
way to evac passegners, then they need to do so for all EMU of every
spec for every train of every railway to cover every just in case, if,
but, and maybe.

It's nowt to do with evacuation - it's in the "Reliability" section
and is about getting failed trains out of the way. Where and why and
in what circumstances is another matter. I've also just noticed it's
in a list titled "This functionality might include...", which would
appear to make it optional. Sadly the full spec isn't online, only the
summary.

U

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