"Joe" wrote in message
ups.com...
I was on a 165 formed of 3 x 2 carriage sets the other day, sat at the
front of the back 2 car unit. The driver passed the signal and by the
time my coach got to the signal, (as you'd expect) it had a red aspect
showing, but why wasn't the train 'tripped?' Do all the tripcocks
become inactive apart from the ones in the 1st unit when they're
coupled together, or do the train stops raise after a delay (say
30Secs) or so to allow the train to pass over?


Only the tripcock on the leading vehicle is "active" on a 165/168.

If two units are coupled together the tripcocks on the two cabs that are
coupled tend to trip but this does not prevent the train from moving. When
the two units are separated again you then find it has been tripped and have
to reset it. The "uncouple" button on a 165/168 doubles as a tripcock reset
button.

Roger

http://rpm-railpics.fotopic.net/
http://therailwaystationgallery.fotopic.net/
http://therailticketgallery.fotopic.net/

All opinions expressed are my own and do not necessarily reflect the views
or policies of my employer.