In article , d () wrote:

On Thu, 10 Nov 2016 12:53:30 +0000
" wrote:
On 09.11.16 19:03, Roland Perry wrote:
In message , at 18:55:42 on Wed, 9 Nov
2016, " remarked:

Almost certain speed,

RAIB have dropped a huge hint about that.

driver or leaf fall?

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Is there not some sort of ATP or speed control system in such an event
on the Tramlink? IIRC, there are timed signals along the line.

TPWS-for-trams, anyone?
Doesn't sound like such a bad idea, under the circumstances.

I'm surprised such systems arn't installed already on trams like croydon
that are essentially railways in all but name.

I think the only system where you might be right is Manchester Metrolink
which has both railway signalled and drive-on-sight sections, with different
controller settings for each. Most trams in this country are driven like
buses. The only real difference is separate traffic signals which only apply
to trams (white lights). I can see a case for railway signals on the
off-road sections of Tramlink which would cover the section south of the
crash site to Sandilands tram stop. That might include overspeed protection
like TPWS.

--
Colin Rosenstiel