Extracted from:
https://www.ianvisits.co.uk/articles/safety-probe-launched-after-new-dlr-train-overshoots-platform-85322/
The DLRrCOs new trains have been taken out of service just weeks after the first one started carrying passengers, following reports of problems with
one of the trains braking in wet weather.
Transport for London (TfL) says that although there has been only one isolated incident involving a single train, all three new trains that were
in service have been temporarily withdrawn from service.
ItrCOs understood that one of the new trains failed to stop in the correct spot at Canning Town station last week. The issue seemed to be due to low adhesion caused by wet weather, which caused the train to overshoot its stopping location.
This is not thought to be an issue with the existing fleet.
Recliner <recliner.usenet@gmail.com> wrote:
Extracted from:
https://www.ianvisits.co.uk/articles/safety-probe-launched-after-new-dlr-train-overshoots-platform-85322/
The DLRrCOs new trains have been taken out of service just weeks after the >> first one started carrying passengers, following reports of problems with
one of the trains braking in wet weather.
Transport for London (TfL) says that although there has been only one
isolated incident involving a single train, all three new trains that were >> in service have been temporarily withdrawn from service.
ItrCOs understood that one of the new trains failed to stop in the correct >> spot at Canning Town station last week. The issue seemed to be due to low
adhesion caused by wet weather, which caused the train to overshoot its
stopping location.
This is not thought to be an issue with the existing fleet.
Would they been tested in wet conditions on a test track? If not seems an oversight ,
the under running third rail collection system might be difficult to accommodate though the Wildenwrath facility has underrunning third rail to test Berlin Stock which may be the same or easy to adapt to.
Wonder if the new Piccadilly trains have been tested on the spray equipped section of eastbound track between South Ealing and Acton to confirm that British Rain isnrCOt different from German Rain.
Marland <gemehabal@btinternet.co.uk> wrote:
Recliner <recliner.usenet@gmail.com> wrote:
ItrCOs understood that one of the new trains failed to stop in the correct >>> spot at Canning Town station last week. The issue seemed to be due to low >>> adhesion caused by wet weather, which caused the train to overshoot its
stopping location.
This is not thought to be an issue with the existing fleet.
Would they been tested in wet conditions on a test track? If not seems an >> oversight ,
IrCOm surprised this wasnrCOt found during the extensive pre-acceptance testing
on the DLR network?
the under running third rail collection system might be difficult to
accommodate though the Wildenwrath facility has underrunning third rail to >> test Berlin Stock which may be the same or easy to adapt to.
Wonder if the new Piccadilly trains have been tested on the spray equipped >> section of eastbound track between South Ealing and Acton to confirm that >> British Rain isnrCOt different from German Rain.
They probably have by now. ThererCOs at least four on test in London, and IrCOm
sure the testing would have started on that test section. The first three >were based in the nearby Northfields depot.
On Wed, 12 Nov 2025 22:41:16 GMT
Recliner <recliner.usenet@gmail.com> gabbled:
Marland <gemehabal@btinternet.co.uk> wrote:
Recliner <recliner.usenet@gmail.com> wrote:
ItrCOs understood that one of the new trains failed to stop in the correct >>>> spot at Canning Town station last week. The issue seemed to be due to low >>>> adhesion caused by wet weather, which caused the train to overshoot its >>>> stopping location.
This is not thought to be an issue with the existing fleet.
Would they been tested in wet conditions on a test track? If not seems an >>> oversight ,
IrCOm surprised this wasnrCOt found during the extensive pre-acceptance testing
on the DLR network?
Its been quite a dry year until recently. Maybe it simply never got wet enough.
the under running third rail collection system might be difficult to
accommodate though the Wildenwrath facility has underrunning third rail to >>> test Berlin Stock which may be the same or easy to adapt to.
Wonder if the new Piccadilly trains have been tested on the spray equipped >>> section of eastbound track between South Ealing and Acton to confirm that >>> British Rain isnrCOt different from German Rain.
They probably have by now. ThererCOs at least four on test in London, and IrCOm
sure the testing would have started on that test section. The first three
were based in the nearby Northfields depot.
The obvious difference being that - at least initially - the pic trains will be driven manually and the drivers will accomodate wet weather into their braking patterns. The ATO on the DLR has no idea what the weather is AFAIK. Unless the control room can set different operating behaviours for various types of weather.
<boltar@caprica.universe> wrote:
On Wed, 12 Nov 2025 22:41:16 GMT
Recliner <recliner.usenet@gmail.com> gabbled:
Marland <gemehabal@btinternet.co.uk> wrote:
Recliner <recliner.usenet@gmail.com> wrote:
ItrCOs understood that one of the new trains failed to stop in the correct
spot at Canning Town station last week. The issue seemed to be due to low >>>>> adhesion caused by wet weather, which caused the train to overshoot its >>>>> stopping location.
This is not thought to be an issue with the existing fleet.
Would they been tested in wet conditions on a test track? If not seems an >>>> oversight ,
IrCOm surprised this wasnrCOt found during the extensive pre-acceptance testing
on the DLR network?
Its been quite a dry year until recently. Maybe it simply never got wet
enough.
the under running third rail collection system might be difficult to
accommodate though the Wildenwrath facility has underrunning third rail to
test Berlin Stock which may be the same or easy to adapt to.
Wonder if the new Piccadilly trains have been tested on the spray equipped >>>> section of eastbound track between South Ealing and Acton to confirm that >>>> British Rain isnrCOt different from German Rain.
They probably have by now. ThererCOs at least four on test in London, and IrCOm
sure the testing would have started on that test section. The first three >>> were based in the nearby Northfields depot.
The obvious difference being that - at least initially - the pic trains will >> be driven manually and the drivers will accomodate wet weather into their
braking patterns. The ATO on the DLR has no idea what the weather is AFAIK. >> Unless the control room can set different operating behaviours for various >> types of weather.
Yes, the Picc trains will be driven manually for the foreseeable future, so the drivers can take account of the weather. IrCOm not sure how the DLR handles wet rails.
On 13/11/2025 18:03, Recliner wrote:
<boltar@caprica.universe> wrote:
On Wed, 12 Nov 2025 22:41:16 GMT
Recliner <recliner.usenet@gmail.com> gabbled:
Marland <gemehabal@btinternet.co.uk> wrote:
Recliner <recliner.usenet@gmail.com> wrote:
ItrCOs understood that one of the new trains failed to stop in the correct
spot at Canning Town station last week. The issue seemed to be due to low
adhesion caused by wet weather, which caused the train to overshoot its >>>>>> stopping location.
This is not thought to be an issue with the existing fleet.
Would they been tested in wet conditions on a test track? If not seems an
oversight ,
IrCOm surprised this wasnrCOt found during the extensive pre-acceptance testing
on the DLR network?
Its been quite a dry year until recently. Maybe it simply never got wet
enough.
the under running third rail collection system might be difficult to >>>>> accommodate though the Wildenwrath facility has underrunning third rail to
test Berlin Stock which may be the same or easy to adapt to.
Wonder if the new Piccadilly trains have been tested on the spray equipped
section of eastbound track between South Ealing and Acton to confirm that
British Rain isnrCOt different from German Rain.
They probably have by now. ThererCOs at least four on test in London, and IrCOm
sure the testing would have started on that test section. The first three >>>> were based in the nearby Northfields depot.
The obvious difference being that - at least initially - the pic trains will
be driven manually and the drivers will accomodate wet weather into their >>> braking patterns. The ATO on the DLR has no idea what the weather is AFAIK. >>> Unless the control room can set different operating behaviours for various >>> types of weather.
Yes, the Picc trains will be driven manually for the foreseeable future, so >> the drivers can take account of the weather. IrCOm not sure how the DLR
handles wet rails.
ATO has been driving trains out in the open on the London Underground
for years now, and on the DLR since it opened. Currently ATO is in use
on the Victoria, Jubillee, Central, Northern and all four subsurface lines.
Bob <nospam@gmail.com> wrote:
ATO has been driving trains out in the open on the London Underground
for years now, and on the DLR since it opened. Currently ATO is in use
on the Victoria, Jubillee, Central, Northern and all four subsurface lines. >>
Yes, and IrCOve not heard of this problem with any of them. We do know that >brake performance has been an issue with these CAF trains for a while rCo >apparently their brakes are less effective than on the several older DLR >fleets, whose speeds have had to be lowered to reduce their performance to >that of the new trains:
https://www.standard.co.uk/news/transport/dlr-trains-speed-restrictions-london-
stratford-lewisham-b1182298.html
https://www.standard.co.uk/news/transport/new-trains-dlr-over-budget-delayed-tf
l-london-b1165927.html
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