Re: Missed the train as the barriers were closed for over 6 minutes

On 14 Aug, 08:52, "Peter Masson" <peter.mass...@privacy.net> wrote:
> "Jabberwocky" <Jabberwo...@nospam.com> wrote in message
>
> news:sPqdnW8Vld9wQT7VnZ2dnUVZ8qfinZ2d@bt.com...> Just missed my train, thanks to
the barriers going down very early.
>
> Manea? It's the only station I can find with trains going towards Cambridge
> which might pass a freight going towards Peterborough. I thought it was just
> the station that Ross used to use to offload ticketless passengers.
>
> Is the crossing CCTV controlled barriers? If so the sequence is initiated
> automatically by, in this case, the freight striking in. This has to be
> early enough that the barriers close and the signaller has time to check the
> screens and press the crossing clear button, and the driver of the freight
> still gets a green at the distant.
>
<snip>

> Peter

and of  course the strike in point will be set for the fastest train,
so if a freight is half the speed, the road close time will be twice
as long.  It doesn't have to be auto lower, it can be done by the
signaller (if he/she has time).

On AHBs where these extended delays can be a problem (leading to zig-
zagging) there are two systems in use (one Westinghouse, one GE
Transportation) that measure the speed of the approaching train and
strike in accordingly.  If the train stops before the crossing, the
barriers can actually raise again.  The GETS system is on B2B.

Cheers

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