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    Where will the last semaphore signals be on the national network?

    Just...no. Although it's true that a signal might be approach released from red when the distance to the next signal is particularly short (and that next signal is at danger), or indeed for other reasons. In any case, if the signal section is shorter than braking distance, what use would you...
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    Hope Valley Capacity Scheme updates

    They’re not really ‘wasting’ capacity, certainly not around Dore. A set of empties coming from the south back to the quarries only goes through the Dore once, whether it goes straight to the quarries or has a layover in Barrow Hill or wherever along the way.
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    Level Crossings - High Level Wigwags

    Spondon: (presumably for better sighting over the hump-back bridge on the approach) https://goo.gl/maps/GuFXDWt7Mr5DVsaV8
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    Cornton level crossing

    It’s currently an AHB crossing, so why do trains have to wait for the barriers to come down?
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    Hope Valley Capacity Scheme updates

    Thanks, and indeed. I certainly wouldn't consider it a lame excuse, even more so if it's all kicking off elsewhere on the panel. Personally, I'd love to see more mutual improvement between the two grades, regular cab rides for signalmen and box visits for drivers. The recent discussion about...
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    Hope Valley Capacity Scheme updates

    No criticism of you or your colleagues intended - apologies if it came across that way. As I said, I appreciate (probably more than most!) that it's often an impossible situation for you. Given a clear run in this example though, we'd have been well on the way down the hill through Dronfield...
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    Hope Valley Capacity Scheme updates

    Whilst I fully appreciate that you’re often in an impossible situation with freights coming off the Hope Valley in particular (having spent more than a few minutes in total sitting at Totley Tunnel East’s Up Home signal!)... On one occasion, I was stopped at S50 (?) signal, on the Up Main...
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    Long tunnels with no ventilation shafts/vice versa

    It’s not the deepest tunnel in the UK, not by a long way. I’m pretty sure that Cowburn Tunnel is*: the depth to rail level at the deepest point is approx 250m - the highest land above the North Downs tunnel isn’t even that far above sea level! * - standard gauge railway, national network, etc...
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    Long tunnels with no ventilation shafts/vice versa

    Standedge has numerous cross-passages between all four bores, if I'm not mistaken, and a number of shafts too. Similarly for Woodhead - there were a number (24 or 26?) cross-passages and a few shafts. The (fairly rubbish, sorry!) photos below are of one of the shafts between the original...
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    What is the purpose of a fixed distant?

    Section N related to Single Line Working (on a normally double track railway), didn't it? I have to say that I'd never considered the possibility of treating a failed train as an obstruction in that context for the purposes of assistance. There's provision in the regs for allowing an assisting...
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    What is the purpose of a fixed distant?

    Other folk have given some excellent answers already, but just to put it in context - we’re really talking about relatively long dead-end single lines, under ‘one train working’ regs (or equivalent with an intermediate instrument), so the section signal taking you onto the single line protects...
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    What is the purpose of a fixed distant?

    I don’t know how widespread the practice of relying on drivers’ route knowledge rather than providing a fixed distant was, and when it ceased, but I’d suggest that most fixed distants reading onto buffer stops at a terminus probably date from the rationalisation of the layout at that terminus...
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    PoSA signals - eh?

    It's more "a fault with something else is preventing this signal from being cleared", e.g. a track circuit failure in the route to the next signal, lamp out at the next signal, that sort of thing. Sometimes it's not necessary for the signalman to speak to the driver first, but even if it is...
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    Trivia: Track layouts which seem to make little sense

    2007/2008-ish. The facing crossover is right out beyond Sincil Bank!
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    Trivia: Track layouts which seem to make little sense

    The current layout at Lincoln has both a facing and trailing crossover on both routes approaching from the east, so full flexibility for both arrivals and departures. The previous layout had no access to the bays (or platform 5, now 3) for arrivals from either direction, which wasn’t uncommon in...
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    Colour Light Signals - Light Order

    Ta, forgot about those. It doesn't really fit the context of the Rule Book clause though, which implies a Rule 39-esque form of approach release in lieu of a yellow aspect, whereas Merseyrail is just line of sight onto the red?
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    Colour Light Signals - Light Order

    The distance to the point of conflict with the Up Main was much greater than the distance to the Down Relief would've been though, so a collision would be potentially more severe but also much less likely to occur in the first place. On that basis it seems to have been a reasonably sound...
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    Performing shunts using ground position signals

    There's no signal to start back from either platform though - they're in rear of the platforms approaching in the Up direction - so presumably they'd have to shunt beyond the platform to get inside clear behind the signal to come back?
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    Performing shunts using ground position signals

    Generally, shunt routes aren’t signalled to the standard required for passenger trains, e.g. adequate overlap and facing points locked etc., so additional measures might need to be taken in the box or on the ground before authority for a passenger train to be signalled over a shunt route can be...
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    I'm confused as to where all the trains fit at night...

    A solitary 15x at Leicester too.

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