Would the situation ever arise when a train was unexpectedly diverted, down a route passed for that class of train, and route signed by the driver, but not route signed by the guard (unknown to the driver)? Would there be any consequences?
Would the situation ever arise when a train was unexpectedly diverted, down a route passed for that class of train, and route signed by the driver, but not route signed by the guard (unknown to the driver)? Would there be any consequences?
Strictly speaking, Crewe steel works and Beeston Castle would have to look as they're both AB, and Chester PSB has the ability to see the train too. Once past Chester, it is Llandudno Jn, but the ironic thing is that it's TCB in the box area, even though it was AB at both ends, but now only at Penmaenmawr end of mainline. So for seeing whether it's complete, does Llandudno have to ensure its looking for tail lamp outside the actual box? Presumably to give line clear to Abergele it must have needed a camera?
Yeah, I was more making the point that all the boxes have closed now and it’s a shame. Some call it progress. We do an ECS move in the morning from Chester to LJ and need to tell the signaller upon arrival that you are complete with tail lamp. Llandudno it’s self would see it if it happened in that direction, so would deganwy.
Never understood how that TCB within an AB thing worked unless there were cameras involved, if it was still Track Circuited to enable the last signals to work as they should, why didn't they just make Abergele and Penmaenmawr fringe to LJ and have LJ area fully TCB? Bangor works in the same way, just seems a bit odd.
To get back to the point. If the 90 on the back had a tail lamp, the signallers wouldn't question it. Not their job to question the consist really, would probably find it very odd, but if it had a lamp, and wasn't doing anything else unusual, why would it be questioned?
It wouldn’t. Not by a signaller anyway. Like you say, as long as there’s a tail lamp then it’s all good. I’m assuming station staff at LJ noticed it and raised the issue. Probably for the best, the pantograph May have been lost going through Conway, didn’t the pendos lose a few while being dragged up there??
It looks like each section is* track circuited throughout towards LJ which removes the need to see a tail lamp, but there's no need for either to be track circuited in the opposite direction (it's just like an IB section in effect) so there's a saving there. Likewise between Bangor and Gaerwen. Presumably it's just for consistency, although I know at least one recent example which was AB in one direction and TCB in the other. The only other possible factor might be/have been the ground frame at Llysfaen which appears to be/have been in the clearing point from Abergele.Never understood how that TCB within an AB thing worked unless there were cameras involved, if it was still Track Circuited to enable the last signals to work as they should, why didn't they just make Abergele and Penmaenmawr fringe to LJ and have LJ area fully TCB? Bangor works in the same way, just seems a bit odd.
It looks like each section is* track circuited throughout towards LJ which removes the need to see a tail lamp, but there's no need for either to be track circuited in the opposite direction (it's just like an IB section in effect) so there's a saving there. Likewise between Bangor and Gaerwen. Presumably it's just for consistency, although I know at least one recent example which was AB in one direction and TCB in the other. The only other possible factor might be/have been the ground frame at Llysfaen which appears to be/have been in the clearing point from Abergele.
A complication is that Penmaenmawr can/could switch out, which in turn would remove LJ's ability to prove the section clear by track circuits alone?
* - was? Not sure how far the resignalling has gone...
I had an incident recently where my train was crossed from the down to the up wrong road without the route indication being displayed. The route indicator was found to be faulty. This happened in the dark in one of the most complex areas of the route. The signal with the junction indicator displayed a single yellow (but without the junction indicator being displayed). It didn’t take long before I realised something was seriously amiss and stopped and contacted signaller.
I can give another location out where a wrong route can be offered, and a driver can't possibly do anything to react and stop in time .However I shall leave it to you non staff people to work it out. Your clue is that the service splits and it's headcode was recently altered to minimise the risk of a wrong route . It involves a 221.
Yes. Driver should always check with the guard to make sure they also sign it. And yes, happens quite regularly.
Saltney Junction? I know it's a hot spot for TfW wrong routings as well.....
That's the one! Had to recode the 1810 for exactly that reason. Had a D code but front portion went to Wrexham. Often got sent towards Rhyl so changed to 1J32 to make it easier to route it correctly.
Running Brake Test? I think it makes sense in the context of the rest of your post, but I was initially baffled.I have to do a RBT before it
So both the Wrexham and Holyhead portions used to have D codes? No wonder it caused trouble! Or was it because it runs as a D all the way from Euston (as all the other Chester and Holyheads do) and with the Wrexham being the front portion it had to keep the same headcode?
Running Brake Test? I think it makes sense in the context of the rest of your post, but I was initially baffled.
If you do end up going the wrong way, and have to stop as a result is that a fast but comfortable stop or a jam on the anchors stop NOW stop? (Assuming you're not about to run out of third rail or knitting, or about to smash into a tunnel mouth you can't fit in)
Does that decision change based on the circumstance? (Wrong route but you sign it, Wrong route that you do not sign, Wrong route that you don't get flashing indicators to forewarn you of for example)
Most frequently wrong routes accepted and taken by the driver is when the driver frequently uses both potential routes e.g. going through the middle road when booked to stop at a station in a loop. It’s extremely rare for a driver to accept a route they do not sign. For example on the Metropolitan Line route Chiltern trains are occasionally given the route accross from the Fasts to the Slows which Chiltern trains cannot take. It was extremely rare for a driver to accept the route as it would be a very unusual move for a mainline train.
For example at Leamington Spa trains are occasionally routed accidently onto the middle road instead of the platform line and because the train is braking down from potentially 90 mph and the signal with route indicator (theatre box) comes into view too late for the driver to be able to stop and challenge at the signal. Once you have passed the signal ahead of the diverging route it’s not possible for the points ahead to be changed!
Uncomfortable like what?What would be the safest course of action? Step 3 or emergency?
I get where you’re coming from but it’s the drivers licence to lose. When the train gets downloaded and the manager sees you’ve stopped comfortabley, s/he’s gonna start asking very uncomfortable questions!!
Sod comfort!
Southbound Northern Line trains at Kennington are sometimes switched to the loop instead of proceeding towards Morden. The signaller has made a mistake, and the driver has seen a green signal and started the train, not realising (until too late) that he's heading for the wrong route. Hopefully there's a least one passenger who thinks it's a good track-bashing experience.
Network Rail are describing it as a "train fault"
What would be the safest course of action? Step 3 or emergency?
I get where you’re coming from but it’s the drivers licence to lose. When the train gets downloaded and the manager sees you’ve stopped comfortabley, s/he’s gonna start asking very uncomfortable questions!!
Sod comfort!