District Line Safety Procedure Announcement

[D_Sims97]

'Attention! As part of a routine safety procedure, this train is about to move slowly forward and then stop suddenly. Please use any seats available or if standing, hold on tight. The train will then continue moving at a reduced speed."

can anyone explain why this is for?
video in question

 

[Central]

Sounds like the procedure for passing signals at danger,driver stops at failing signal,gets permission to pass signal at danger from control. Under the old signalling system he then passes the signal at slow speed and is tripped(hence the request to hold tight)driver then resets the trip and proceeds at slow speed(train restricted to 10mph for around 3 minutes).

 

[Peter Mugridge]

That sounds a bit like the procedure for a signal failure; was this on a section that had been converted to automatic operation or a section that is still conventionally signalled?

 

[rebmcr]

There are similar announcements on Metrolink, but only on the National Rail-signalled section south of Timperley. Despite the routine street-running of Metrolink trams, the rules on the Navigation Road level crossing have to be followed as if they were mainline trains.

I was on such a service years ago, when the level crossing barriers failed. After a period of deciding whether to cancel the service, it was announced that the tram could be authorised to pass the danger signal and proceed to Altrincham, but: A) there was technically an opportunity for conflict with road vehicles; therefore B) the emergency brake might be used; and C) T68 trams (as well as their M5000 successors) are fitted with an electromagnetic track brake which provides very nearly instant 0mph upon application.

Everyone aboard was warned to remain seated and to hold on during the manoeuvre, which of course proceeded as uneventfully as the thousands of daily road crossings in Manchester city centre.

 

[Mojo]

That sounds a bit like the procedure for a signal failure; was this on a section that had been converted to automatic operation or a section that is still conventionally signalled?

Having listened to the video it would appear that it is just a compilation of some of the announcements played on the trains, rather than an actual announcement played in anger on a train the OP was travelling on.

Nonetheless, you and the OP are correct and this announcement would be played before a Train Operator is authorised to pass a signal at danger, in most cases because of a signal failure. It would only apply to conventionally signalled sections.

 

[D_Sims97]

Sounds like the procedure for passing signals at danger,driver stops at failing signal,gets permission to pass signal at danger from control. Under the old signalling system he then passes the signal at slow speed and is tripped(hence the request to hold tight)driver then resets the trip and proceeds at slow speed(train restricted to 10mph for around 3 minutes).

Thank You!

== Doublepost prevention - post automatically merged: 3 Nov 2022 ==

Having listened to the video it would appear that it is just a compilation of some of the announcements played on the trains, rather than an actual announcement played in anger on a train the OP was travelling on.

Nonetheless, you and the OP are correct and this announcement would be played before a Train Operator is authorised to pass a signal at danger, in most cases because of a signal failure. It would only apply to conventionally signalled sections.

Thanks!

== Doublepost prevention - post automatically merged: 3 Nov 2022 ==

There are similar announcements on Metrolink, but only on the National Rail-signalled section south of Timperley. Despite the routine street-running of Metrolink trams, the rules on the Navigation Road level crossing have to be followed as if they were mainline trains.

I was on such a service years ago, when the level crossing barriers failed. After a period of deciding whether to cancel the service, it was announced that the tram could be authorised to pass the danger signal and proceed to Altrincham, but: A) there was technically an opportunity for conflict with road vehicles; therefore B) the emergency brake might be used; and C) T68 trams (as well as their M5000 successors) are fitted with an electromagnetic track brake which provides very nearly instant 0mph upon application.

Everyone aboard was warned to remain seated and to hold on during the manoeuvre, which of course proceeded as uneventfully as the thousands of daily road crossings in Manchester city centre.

ah the famous brake