On Fri, 9 Nov 2018 at 02:47, David Van Horn <
david.vanhorn@backcountryaccess.com> wrote:

>
> 30+ years later I found that a friend of a year or so had been a trainee
> guard in the van at the rear of the train!
>
> "So I hear your first day was a little rough..."


Probably not his first, but could well have been his last had not both the
engine driver and engineer reacted as well as they did.
It sounds like the train commenced braking about 6 seconds before it
entered the bridge. Add a second or so of reaction time and another (at
least) to get it braking* and the sand release going.


Russell

* I don't know what the propagation time is of a vacuum braking event along
a train once activated. Not long, you'd hope.
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