Re: Hornsby Derailment in Sun-Herald

[Railway Rasputin <bob@fastlink.com.au>]

"Ron BESDANSKY (formerly Ron BEST)" wrote:

A train stop isn't necessarily going to prevent a collision or derailment.
It will always require some distance for the train to be brought to a stand
from whatever speed it was doing when it was tripped. In the case of the
exit signal from a loop, there's almost no point in having a train stop,
because, if the signal is passed at 'stop', the train is likely to be sent
into the dirt by the catch points anyway. Normally, the  design of overlaps
etc should be such that, unless the driver does something really silly, the
train will be brought to a stand clear of any obstruction.
Rgds

Ron BESDANSKY (formerly Ron BEST)

True but they could have intermediate trips, like at Central, East Hills
and a few other places. These stop the train if the train goes faster than
a specific speed (25kph).

So if you have a driver with a death wish, speed freek or ignorance, the trips will pull him up before the get too carried away.

rgds