I know it's obvious, but I should say it anyway: the public can't get close to these signals. Do NOT go onto tracks without permission. Access and overflight requires a lot of co-operation and paperwork, and I'm extremely grateful to all the Network Rail team who helped with this video!

@jamesduncan6729

2 жыл бұрын

Yes, unfortunately there are those among us who lack the necessary common sense. It sadly does need to be said

@maniee8995

2 жыл бұрын

the fact that this had to be said just shows how people will go to great lengths in doing something stupid

@teddyboragina6437

2 жыл бұрын

why can't they cover it? I know they've covered parts of rail in British Columbia due to potential landslides.

@jamesduncan6729

2 жыл бұрын

@@Noah-lj2sg No

@mcbyt

2 жыл бұрын

@@Noah-lj2sg bro i see you everywhere

“As small as a microwave […] as large as a washing machine”: I love the idea that this guy only ever uses the relative sizes of kitchen appliances as a unit of measure.

@GewelReal

2 жыл бұрын

Imperial be like

@ziiofswe

2 жыл бұрын

How else would American viewers understand??? Next up: Small boulders of the size of large boulders.

@zeussierraalex

2 жыл бұрын

You’ve got a washing machine in your kitchen?

@amirnuriev9092

2 жыл бұрын

@@ziiofswe i mean these mfs already measure mass in stones

@GewelReal

2 жыл бұрын

@@zeussierraalex who tf has washing machine in their kitchen?

The Epitome of "If it ain't broke, Don't fix it" There's actually a lot of old technology that thrives that runs minor and crucial systems around the world. Brilliant pieces of engineering that you can only marvel at. From there are inventions that are merely advancements of one person's design. It's one of the best things about the human brain to Tinker.

@FreelanceDev4life

2 жыл бұрын

I really love seeing this old technology that is still used in major way.

@patu8010

2 жыл бұрын

I wouldn't call it an epitome of that because the engineer says it's a clumsy system and they would replace it if they could.

@thesteelrodent1796

2 жыл бұрын

ironically, these wires are meant to break, and then have to be fixed when they do

@katiehazeltine5312

2 жыл бұрын

the problem is, the system breaks all the time... its made to do that

@NotTheWheel

2 жыл бұрын

@@katiehazeltine5312 I should mention that when I say if it's not broke... I'm talking about it's over all reliability. Not that it actually breaks.

140 years, the ABSOLUTE definition of, "if it ain't broken, don't fix it"

@FBAV

2 жыл бұрын

A system that functions in a way that it's actually MEANT to break is in fact the best idea to give a real warning...

@Krytern

2 жыл бұрын

I hate that expression.

@FBAV

2 жыл бұрын

@@Krytern well so I was going to say the expression seems a bit misplaced here and I also can't stand the use of cliché expressions when they're not thought of, just use them cause they're common sayings or expressions... Cause it makes no sense in this case it's more like; if it breaks it means it's working... Allthough it does make some sense in the way of saying; if the system that way itself ain't broken, no need to replace it cause it works well... But even then "if it ain't broken don't fix it"? Nah, it functions the other way around; if it breaks don't fix it cause it means there's probably rocks on the tracks... So uhm yes I get it. Pardon me Rich G, I understand what you mean to say but I disagree with saying it's the ABSOLUTE definition... It's VERY relative in this case I'd say. 😉

@Donkeymaster9000

Жыл бұрын

Rock: “if it ain’t broken, don’t fix it” Tracks: NOOOOooooooooo

@ron3557

Жыл бұрын

​@@Krytern why? It makes sense, if something isn't broken, why bother to fix it? It works

This system was originally designed to keep Glasgow residents out of Edinburgh, but it was far more effective for rocks and trains

@shortymcsteve

2 жыл бұрын

The only thing keeping Glaswegians out of Edinburgh is pride.

@alanmc1846

2 жыл бұрын

@@shortymcsteve and the stench

@salientsolution5436

2 жыл бұрын

@@alanmc1846 And the price of pints

@ally_crawford

2 жыл бұрын

@@salientsolution5436 and the accent 😂

@strictlysega

2 жыл бұрын

@@shortymcsteve and the tourists

The crew behind Anderson's piano probably had no idea that their system would last longer than the era of steam locomotion, let alone into the 21st century

@Eustathe

2 жыл бұрын

They probably had no idea that the era of steam locomotion would not least forever...

@Beakerbite

2 жыл бұрын

@@Eustathe Electric engines and diesel engines were known about at the time. It was a problem of efficiency not discovery. Anyone that was well read would have known that these concepts were likely the future, just a matter of when.

@MentalParadox

2 жыл бұрын

@@Eustathe People back then were not idiots.

@Eustathe

2 жыл бұрын

@@MentalParadox nee, echt waar? 🙄

@Bobmcjoepants

2 жыл бұрын

It's really amazing to think that something so small and simple can be developed into something huge and complicated and/or last decades or centuries

Very impressed by Alastair's knowledge of the systems involved and eloquence when explaining the various aspects of each. It's nice to hear an expert talk about a subject they're passionate about and it's one of the main reasons I enjoy Tom's videos so much. Cheers @Tom!

@bilinasmini3480

2 жыл бұрын

trains one way or another. What I'm saying is that trains are perfect and awesome machines.

I'm a train operator in the US. I can completely understand how this system would still be the best. Sometimes it's an old solution or principle that is the most reliable in terms of energy requirements or practicality. Also, I can definitely vouch for the dangers of larger objects. It takes a lot to derail a train but sometimes, all it takes is a cow or a deer. I've seen it both ways.

@blazerorb

2 жыл бұрын

I've been wondering why there aren't just plows on the front to knock objects off?

@SupernovaSpence

2 жыл бұрын

@@blazerorb not all objects get pushed out of the way. Most locomotives have some sort of plow, but they are different from the cliche cattle-catchers of old locomotives

@mnxs

2 жыл бұрын

@@SupernovaSpence this is fascinating altogether, but I'm wondering exactly what you mean by "not all objects": are you referring to just particularly large and heavy things, like Alastair the engineer's example of a washing machine, or can smaller stuff like, again, microwave oven-sized rocks also 'bypass' a big, front-mounted plow?

@comet.x

2 жыл бұрын

@@SupernovaSpence unless your in a canadian winter . A freight train with a snow plough is a site to behold in heavy snow. And if there is a snow bank you back up so you don't get blasted off your feet from the oncoming snow eave

@diazinth

3 ай бұрын

@@mnxs I guess, depending on size, weight and where in relation to center of mass of the object, it could go to either side, or under the plow. The plow probably can't scrape neiter the rails nor between them to push everything away, for the same reasons our toy cars got stuck when transitioning from the back rest of the sofa to the sitty bit. Trains also have some "slightly" more gradual transitions like that :)

I honestly could hear this guy talk about trains and rail for days.

@turtlegamez4274

2 жыл бұрын

Tom or the Scot? I could listen to both

@lcsantos777

2 жыл бұрын

@@turtlegamez4274 definitely both

@TheRealMycanthrope

2 жыл бұрын

That Scot has the perfect combination of a nice Scottish burr with clearly spoken English

@kme3894

2 жыл бұрын

very ASMRish indeed

@thewingedporpoise

2 жыл бұрын

yes, it is so soothing

It's actually a bit funny to imagine someone from the rail service ordering new wire for Anderson's Piano starting with the line, "I need 100 metres of your weakest wire"

@snakesaliva

2 жыл бұрын

Ahahahaha

@binbows2258

2 жыл бұрын

@@hairyairey You could pay a lot to have it coated with anti-rust stuff or something. Wouldn't be economically viable though.

@AndrewHalliwell

2 жыл бұрын

@@hairyairey or you could just coat the drums in oil.

@SeanBZA

2 жыл бұрын

Simple enough, you take a few dozen samples of the original wire, and send them off for tensile strength testing. Then you get a nice set of figures for the tensile strength, and the elongation at yield, plus a plastic deformation load. then your request for supply goes out to your suppliers for a wire, coated with zinc, like most wire is, that is within 10% of these 3 parameters, and you get the result back. Choose a supplier and order 100km of the wire, test on arrival to ensure it complies, and place a few rolls in the local stores area, ready for use there. Not at all difficult, and while the new wire might be a little thinner than the original steel, due to improved steel making resulting in a higher strength steel, it will still fit the old mountings and apparatus perfectly.

@skussy69

2 жыл бұрын

@@KurtFrederiksen the wire gage doesn't matter as much as you think it do

The fact that Tom consistently, week on week provides an extremely interesting video about a subject I would have never thought about before is magnificent. Thank you Tom for all that you do!

@bradleyharrisYT

2 жыл бұрын

Also, that van that can also drive on the railway is beyond cool!

@actuallypings7940

2 жыл бұрын

Bot

@bradleyharrisYT

2 жыл бұрын

@@actuallypings7940 alright mate, whatever you say….

@oqocraft2661

2 жыл бұрын

@@actuallypings7940 it's not a bot

@darexinfinity

2 ай бұрын

Not anymore :(

I've travelled on this line many times and I had no idea there was anything like this going on behind the scenes. I've a new found respect for Scotland's railway men and women.

Alistair could announce an impending apocalypse and I'd still feel calm

@hawk_ness

2 жыл бұрын

Its why a lot of call centres in the UK are in Scotland as the Scottish accent like this can be very calming for people.

@JaleDoris

2 жыл бұрын

I would not have panic attacks before calling customer service if I knew Alistair was on the other end of the line.

@OCC_Plumbing_and_Restorations

2 жыл бұрын

Nathan Evans: am I a joke to you?

@wikansaktianto9215

2 жыл бұрын

Impending apocalypse.. did you mean recent days or last year?

@2760ade

2 жыл бұрын

@@JaleDoris Ha ha, yes! I always seem to get that angry sounding chap in India who is clearly reading from a script😂

Petition for all physical hazards to be measured by the Scottish Standard "Microwave to Washing Machine" Scale.

@LucaHaneklau

2 жыл бұрын

I am still struggling with the wavelength of washing machines...

@Thisisace

2 жыл бұрын

I was thrown by "Something small like a microwave"!

@Rerbun

2 жыл бұрын

@@Thisisace a very sturdy train to not be bothered too much by a rock the size of a microwave

@stevemulcahy5014

2 жыл бұрын

I was thinking "Well don't let microwaves and washing machines on the track"!

@ampeerprime421

2 жыл бұрын

where does a full landslide fall on this scale?

I love train watching in Scotland . Old school semaphores , Manned interlocking towers , friendly employees and spectacular scenery . Well done !

The timing! Wow!

@mahaveerdmuragi6272

2 жыл бұрын

It's soo perfect

@LtSMASH324

2 жыл бұрын

I thought they must've set that up but it just wouldn't be realistic. So perfect!

@munkeypantsman

2 жыл бұрын

The timing rivals James Burke's shot of a rocket lifting off

@wiraydh

2 жыл бұрын

@@munkeypantsman that's what I was gonna say!

Anderson's Piano would have made a great subject for the Technical Difficulties. That is all; carry on.

@Nimelennar

2 жыл бұрын

Two of these people are lying: What is Anderson's Piano?

@gordonrichardson2972

2 жыл бұрын

You have to search for "Pass of Brander stone signals".

@nsiepmann

2 жыл бұрын

I'm now hearing in my head Gary saying the words 'Anderson's Piano is...' with the unshakeable confidence of a master BSer

@U014B

2 жыл бұрын

It's an album by Brian Eno of Scandinavian folk songs played on a prepared piano.

@TomDufall

2 жыл бұрын

@@Nimelennar Anderson's Piano is a Finnish torture device

I wonder why they haven't written a manual on the maintenance of this system? Sure, a lot of it is probably fiddling with it (in an engineer way) until things work properly, but there should be no barrier to writing out what the general methods are, and the "DO NOT DO THIS UNLESS YOU WISH DEATH" warnings.

@houston-says-hi

2 жыл бұрын

Exactly what I was thinking. Obviously its a complex, manual system, but tons of far more complex systems have written manuals and videos and the like to give information on said complexities. Seems strange to have this information be "passed down" from year to year as if it would be impossible to create a guidebook that supplements physical interaction with the device. Would be like a 50s car just having absolutely no written documentation on it, simply because theres two guys around that know how to work on it and they'll explain it to you if you ask.

@majorfallacy5926

2 жыл бұрын

documentation is a myth you learn about in uni that doesn't exists in the industry

@SeanBZA

2 жыл бұрын

There likely are a few maintenance manuals for it, written a century ago, but the parts that they used in there are, for the most part, either long obsolete, or were all "house made" by the local steam train service shop, using the blacksmiths and boilermakers there to manufacture them all in house, along with railways carpenters that made the wooden aspects of the system. Kind of hard to replicate without a large forge, power hammer and a lot of skilled craftspeople to do the various aspects. You are not going to buy the parts off eBay for this easily, and most hardware stores will look on you in puzzlement when you ask for a sixpenny nail or a tuppence one.

@jonathansmith6050

2 жыл бұрын

I suspect that that was a bit of hyperbole. They probably have written a manual. And yet, as a carefully balanced mechanical process involving carefully balanced tensions, counterweights, friction, etc. there's probably a reasonable element that you can't learn just from reading a book. I expect that you also need some hands on practice with the system to learn the practical skills to turn written theory into practical results.

@tomevans9512

2 жыл бұрын

I'm sure they have, but it's obviously not been written by whoever designed/built it originally, which is how modern systems are documented. It means you can still get unforseen and undocumented problems which need a fundamental understanding of the system to solve.

There is a similar tripwire system used at the eastern end of Southend Airport to protect against an aircraft running off the end of the runway and onto the railway. If it's tripped, the approach signals on both roads are dropped back to red and it requires a physical re-set afterwards. (Presumably Instruction No.1 of the local procedure reads something like "Check for bits of burning aircraft on the railway".)

@agentorange153

6 ай бұрын

And if it's NOT burning, but just in pieces???

Love trains, all the best from Finland to the dear Scots!

0:47 It took me a minute to realize "as small as a microwave" didn't mean "between 1mm and 1m". Although, I guess that technically still fits.

@baylees9800

2 жыл бұрын

Same 😂

I work for a Software company that creates a lot of technology for ensuring the Rail Network in the UK is safe (such as gauging). I have absolutely no idea how I'd approach this issue, and honestly, I think wire on a stick is still the best approach. Well played, Scotland.

@neonwired4978

2 жыл бұрын

depends what they are prepared to pay

@feha92

2 жыл бұрын

Lots of others have replied with the same idea I had: a sensor on the danger-signals, that when the mechanism trips, also triggers the sensor which then sends a packet to the central control. They clearly have the system for the _much_ more prolific tilt sensors already, so could derive from that. Some ppl ask about power, but a small solar would obviously be enough (it would literally off by default, as the danger-semaphore would act as a switch closing a circuit) with a small battery, despite it being scotland. And one even brought up how the mechanism could provide enough energy by simply releasing a weight powering a gravity-clock-esque system, or outright use the mechanism itself as such, to generate the little power needed. Which honestly is kind of genius in how cheap that would be compared to sourcing a tiny solar panel, or even the small flat batteries used in wristwatches.

@DereinzigwahreAkede

2 жыл бұрын

@@feha92 just glue a magnet on the signal and put a coil beneath. No need for fancy power generation. The drop will generate the current wich could be registered by any microprocessor just let the pin be an interupt

@feha92

2 жыл бұрын

@@DereinzigwahreAkede Thats what a gravity-clock mechanism _is,_ congratulations!

@hijackstudios

2 жыл бұрын

A survey drone is my best guess (Lidar on a UAV) which flies the track ahead of a train. That results in a point cloud of heights which can be very accurately geo-located, and that then turns the rock problem into a relatively simple bounds check in software. Even a £5k commercial drone is likely a lot cheaper than maintaining their current setup. Or an even simpler one: just stream the video from a drone to the human driver of the train.

Very well done. It’s a real treat being able to view parts of Scotland’s railway system. American railways are built on the foundation of what was created in your land so long ago. Love the semaphore signals! I’ve visited Glasgow and Edinburg, but I would love to see the whole country; especially all that lies to the north of G & E. What a lovely country!

1:58 - "There's no user manual." - Er... then shouldn't someone *_make_* one? I mean, user manuals don't just materialise out of the ether, someone needs to write them.

@FabbrizioPlays

Жыл бұрын

The only reason manuals exist is for situations where it's impractical to teach someone in-person, because it is mass produced and sold to various unconnected places. There is only one Anderson Piano system, in use by a singular, tight-knit group, which absolutely has the resources to teach in-person. And live teaching always, *always* beats learning from a book. It's not even close.

@RFC-3514

Жыл бұрын

@@FabbrizioPlays - Manuals exist to _standardise_ teaching and to function as _references._ Especially with something this complex, that requires diagrams, maps, etc., there should be a manual even if people are being trained "in person". How does relying on some random guys' ability to memorise the locations, settings and specifications of different parts "beat" having them written down in a curated document, that they can refer to when necessary? There was only one space shuttle launch pad (well, eventually there were two). Do you think they didn't have manuals for it? Every part and every procedure was fully documented. How's the Aboriginal "in-person-teaching-only" space programme doing?

@NerdyCatCoffeeee

Жыл бұрын

@@RFC-3514 "the Aboriginal "in-person-teaching-only" space programme" God, what a great way to describe KSP

I don't know if Tom realizes how much his videos make people like me want to visit the UK. Those Scottish landscapes look absolutely gorgeous.

@MrNikolidas

2 жыл бұрын

From Edinburgh head north, take the A9 past Perth, hang a left at Dalwhinnie towards Fort William. It's about 3-4 hours and takes you into the scenery you're going for, if you ever decide to come :)

@MrNikolidas

2 жыл бұрын

@Teamgeist Depends what time of year and what altitude you're at. In summer the land around the lochs and down in the valleys can be stunningly green.

@newshefan

2 жыл бұрын

Visit Scotland! You'll love the different landscapes. Expect vast areas of green and also areas of nothing interesting, so to speak. When I went to the Highlands, I was told to expect not that much but I enjoyed the day tour going to water falls, glens, dams, castles, etc. Scotland is really a rather amazing place to visit. Don't forget to try the food - I can't find good haggis anywhere else!

@nolyspe

2 жыл бұрын

Scotland has been on my wishlist for a while, if only for my enjoyment of Scotch.

@newshefan

2 жыл бұрын

@@nolyspe add distilleries to your itinerary if you're inclined to the process and drinks

6:18 The train’s musical accompaniment to “Hey, couldn’t they just…” is excellent.

@JugalSingh

2 жыл бұрын

it's like the train was saying at that exact moment, "nope, shut up"

Thanks for having subtitles👍

As a happy passenger who's been lucky enough to travel by train through the Highlands, I'm grateful for this technology! And I highly recommend this trip to everyone, it's spectacular! 🚂❤️

I just think that this proves that trains and train related devices are already near-perfect. I mean whenever someone tries to reinvent transportation, it just ends up coming back to trains one way or another. What I'm saying is that trains are perfect and awesome machines.

@ramankhmel2094

2 жыл бұрын

also wheels are overrated because of one thing: you need roads

@theuselessteammate2097

2 жыл бұрын

Says who

@jan-lukas

2 жыл бұрын

@@ramankhmel2094 trains have wheels?

@alexlandherr

2 жыл бұрын

Sheldon Cooper approves.

@matthewparker9276

2 жыл бұрын

@@ramankhmel2094 wheels are surprisingly optimised.

Tom loves trains, and landslide warning videos.

@hungrymusicwolf

2 жыл бұрын

And so do we, or at least I hope so (in moderation).

@MonkeyJedi99

2 жыл бұрын

Tom the tank engine explainer?

Railroader for eight years here. I worked in Montana for a while and we had these for a section of our track which was adjacent to a rock face. I have personally only seen this system set off once before which was for a fairly large rock that got through, but wasn't on the actual track. There's also a permanent slow order through that zone which was 30 mph. If it works, no need to fix it. The fact is that many of the technologies used on trains and track is decades old, some of it over a century old now.

On the North American rail network, the lines carry an electric current. When a rockslide, snowslide, or other avalanche breaks the circuit, it triggers a red signal on the track and alerts the control center (which is often thousands of miles away).

@tonybarrett8543

7 ай бұрын

This is for stretches of rail where power sources are not available or not economical. As one US train driver commented, they use a system like this in remote areas in the US.

@johndododoe1411

6 ай бұрын

In the UK, electrical signaling goes everywhere the trains do, so not a problem, however a mechanical switch at each wire could be tuned to alert central control if the wire is broken or pulled, with different alerts per direction . If something is leaning on a wire (pulled), an investigation train can be sent to identify and remove it . If something bigger breaks a wire, investigation train also needs to install a new wire and reset the tension to return the sensor switch to middle position . One advantage of such a basic upgrade is to signal trains to slow down before reaching the alarm area, with all the modern procedures of other temporary speed restriction signals .

@lukasalig8812

6 ай бұрын

Sehr altes und nicht gerade überzeugendes System. Gehen sie zur SBB (Schweizerische Bundesbahn) und schauen sie, wie diese hochmoderne automatische Technik funktioniert.

@agentorange153

6 ай бұрын

But if the current is in the rails, wouldn't this only work if a rail is actually broken??? And if so, might it not miss a rock or a pile of snow which obstructs the tracks but fails to actually knock a rail out of place???

@davidsp5936

6 ай бұрын

The current isn't in the rails. It's in wires strung along the side.

I work in an underground mine in canada, and we use the same type of "tensioned rope with a flag at each end" system to monitor the beltways that run underground. It works, and it makes it easy to find a problem. You just drive until you find a flag up.

@wobblysauce

2 жыл бұрын

Just like the mail, with fewer pulleys.

"something as small as a microwave could cause problems to a train" for a moment there i was mesmerized about how a wavelength could cause problems to a train

@fetchstixRHD

2 жыл бұрын

Well, those too!

@patricklechtenberg3173

2 жыл бұрын

Glad I'm not the only one who had that though

@deleted-something

Жыл бұрын

Me too

As a kid, I always imagined that cars could just be converted into rail vehicles by getting rid of the tires and these guys actually realized kid me's imagination

@RXTransit

6 ай бұрын

They are called Hi-Rail vehicles

When I saw the thumbnail, I thought you were talking about semaphores. :) I was confused because there are regular lighted signals on certain railway lines these days, not just semaphores. The mechanical rock fall detection system makes more sense (and makes a lot of sense for needing to use semaphores :) ).

@Inkyminkyzizwoz

2 жыл бұрын

So did I

@markylon

Жыл бұрын

lit not lighted. Poor English there!!

@c182SkylaneRG

Жыл бұрын

@@markylon That would be "regularly lit" as in frequently, or with a constant time interval. "Regular lighted" might have needed a comma ("regular, lighted"), as they're both descriptors of the signal style, and indication that "all" signals contain nighttime illumination of some form or other, these days.

I like the size comparison to microwaves and washing machines, rather sensible. And the timing of the Sprinter at the end there was impeccable! Also was quite surprised Geoff didn't make an appearance here :P Interesting bit of kit too, think I've heard of it before but never really looked into it.

@jojodroid31

2 жыл бұрын

"small rocks" and "size of a microwave" in once sentence was quite funny though

@AaronOfMpls

2 жыл бұрын

@@jojodroid31 Indeed, if that's a "small" rock, then they _really_ don't want a train to hit a big one. 🙂

@christianh2581

2 жыл бұрын

I thought size of a microwave as in the wavelength of frequencies in the 'microwave' range until i noticed hes talking about an actual microwave oven 😅

@ChoobChoob

2 жыл бұрын

In urban areas you get microwaves falling on to tracks.

@DannySullivanMusic

2 жыл бұрын

for real dude. unequivocally correct

Tom your timing is always on point! I would not be surprised if that was planned :D

@gwyneddboom2579

2 жыл бұрын

Must’ve waited a long time for that train

@lianadoom

2 жыл бұрын

@@gwyneddboom2579 probably 30 minutes to an hour xD

@burgerpommes2001

2 жыл бұрын

you can look up when the train is suposed to come

@richardmillhousenixon

2 жыл бұрын

@@burgerpommes2001 that relies on the train being on schedule

@OnlyGrafting

2 жыл бұрын

@@richardmillhousenixon any delays also show up online

Wow that's amazing, I have hopped almost every mainline in America. I would love to hop through there it looks gorgeous. I love old analog tech, especially in the train sector.

0:40 gotta love those "debry flows" xD

"small rocks can be an issue for trains" "huh never thought you'd be able to stop a train with a pebble" "rocks as small as a microwave oven can be problematic, washing machines sized obstacles could cause derailment" oh

"Something as small as a microwave can cause a train problem, something as big as a washing machine could lead to derailment..." I guess they have problems with domestic appliances tumbling down mountains in Scotland!

@SeanBZA

2 жыл бұрын

Normally followed by a Scotsman hoping to grab all the copper wire out of it as well, to turn back into a penny.

@tonydarcy1606

2 жыл бұрын

A few years ago some volunteers cleared a lot of the human debris left at the summit of Ben Nevis, Britain's highest point, and well visited. Among the items they had to deal with was a piano, thought to have been carried up there as a prank by some students ! Throwing it over the north face was not an option ! (No, it wasn't Anderson's piano !)

@MonkeyJedi99

2 жыл бұрын

@@tonydarcy1606 Easy solution for the piano. build a trebuchet at the summit, fling the piano off the mountain (and PLEASE record the sound, for comedy). What's that? Now there's a trebuchet on top of the mountain? Bah, details.

@narfharder

2 жыл бұрын

"Is it bigger than a breadbox?"

@chilanya

2 жыл бұрын

Please recycle, people!

The timing at the end honestly put a smile on my face.

That was cool to see. Thanks.

There are so many critical systems built today that aren't built to last 10 or 20 years, much less 100+ years. I hope the lessons and work of engineers and construction workers from back then survive our modern 'build it as fast and cheap as possible' mindset and thrive with a new generation. That said, the mindset and detail-oriented designs of past decades, applied to the technology we have today, could result in systems that are as robust and resilient, while also cheaper to maintain. We just need to back off a little bit from the "always choose the lowest bidder" option.

@kroezelgaming

2 жыл бұрын

Agreeing with you.

@hungrymusicwolf

2 жыл бұрын

@@kroezelgaming Second that.

@automated8493

2 жыл бұрын

I think the main trouble is that parts are outsourced or designed by specialist companies. Those companies have it built into their business model that they want/need the ability to sell replacements/upgrades to the same people in years to come.. so it's in their interest to manufacture parts with a lower shelf life. Very hard to police that. Somebody who worked at a power tool company said that they literally *could* make a motor that would last 50 years, but the design it to only last a fraction of that.

@archismanmajumdar215

2 жыл бұрын

Rpi controlled railway signal system here I come.

@wraith_1367

2 жыл бұрын

@@kroezelgaming forth that

Wow, mad props and respect to the people who work to deal with this. There's a lot of teamwork and cooperation involved in just making this work.

@happywednesday6741

2 жыл бұрын

It's a terrible system let's be honest

@astrosuperkoala1

2 жыл бұрын

A. Congrats on check B. You changed ur pfp this is not okie dokie

@oscarosullivan4513

2 жыл бұрын

Still used in parts of Ireland. Plenty of archive footage going up until the mid 2000’s

@ajxx9987

2 жыл бұрын

You again

@Xingmey

2 жыл бұрын

ohrly...? so as with any railwy, or infrastructure...?

Wow that was crazy timing in the end

Thankful for all these great minds and people who essentially keep the world running smooth. Thanks for another great video & effort Tom!

Tom really has impeccable timing for things, like if every person has magic in their own way, that must be Tom's magic.

@ailaG

2 жыл бұрын

Or enough takes

@Game_Hero

2 жыл бұрын

Except icelandic volcanoes...

@vigilantcosmicpenguin8721

2 жыл бұрын

@@Game_Hero Iceland really is his weakness, between the volcano and the Icelandic-Mexican fusion cuisine.

@cazssiew

2 жыл бұрын

His intonation on "hey, couldn't they just…"was even in tune with the train's horn. How???

@K16711

2 жыл бұрын

Volcanoes and giant metal dome sculptures (elia)

Exactly the same problem exists for conveyor systems - pull wire switch monitors exist to tell operators exactly which switch is tripped on 20 km conveyor systems with a switch every 100m. On conveyor systems they still need local resets because they are a safety of life system but simply knowing which of the 400 switches (they are on both sides) has tripped is a massive time saving. The radio transponders use lithium batteries that are changed every five years.

That was great timing at the end…

No matter how much I learn about the English language and the world, all Scottish people sounding like the TF2 Demoman will never stop being amazing to me

@agentorange153

6 ай бұрын

I actually could only understand about 75% of what this laddie said -- I always have trouble deciphering a Scottish accent, while a Cockney accent I find much easier to decipher!

I find it amazing how many big institutions rely on "tribal knoledge" passed down previous employees to newer ones. The inability to store and access legacy information on processes and equipment is a major problem that needs to be addressed of we are to operate in a world of very long life systems.

@ailaG

2 жыл бұрын

Tacit knowledge I guess

@squirlmy

2 жыл бұрын

OTOH, it provides some employment security. People can't be replaced without being able to pass knowledge down. You might be surprised how entrenched this thinking is, and it's not without some justification. Before presenting "solutions" from on high, you have to reassure employees that it won't make them redundant. Especially if you're actually trying to make employees redundant.

@chrysshart

2 жыл бұрын

@@squirlmy OK, but what happens if the person with the specialized knowledge dies in a sudden accident? There's no harm in having it written down or otherwise codified so that the knowledge is not lost.

@donttestme9546

2 жыл бұрын

@@chrysshart I would say for this specific application it's a team of people so the likelyhood of them all dying in a freak accident is slim. Most modern businesses that use general labor have a written S.O.P for the task, but I would consider this a niche case.

@BEHEMOTH20

2 жыл бұрын

@@chrysshart You are right, there is no decent reason why this system couldn't be documented to a reasonable level, of course anyone working on it is always going to need a fair bit of common sense but its not hard to write down a decent crash course in its operation and maintenance.

During Christmas 2016 I got stuck for an extra overnight at Kyle of Lochalsh (that's on the northwest mainland looking over to Skye) due to a landslip disrupting the tracks. The wires broke, word got out and my train was cancelled. Spent it in a cabin looking out to a ruined castle during a storm, with a log fire going and history books to read by the window. The system works. PS There was a battle at the Pass of Brander / Cruachan area in 1308 where Robert Bruce and James Douglas ambushed the Macdougalls by climbing over Ben Cruachan. The more you know!

@davidrenton

2 жыл бұрын

it could still be improved , it could send a bottle of the local Talisker whiskey to your cabin and have you boss phone you to say you can take another week off and have a pay rise while your at it.

@peternewton2200

2 жыл бұрын

This system isn’t used on the Kyle line. That part of the word it was likely a roach fall incident, we have them fairly frequently despite nearly annual work installing mesh over the cutting faces

In Germany we use the same system still today. It's called "BALA": BoschüngsALarmAnlage". Word by word translated something like "embankment alarm system". We use it not only for rocks but also as detector for levee slides after massive rainfalls. The only electric thing in the BALA ist a simple box in the office of the signal dispatcher which screams loud as hell, when the steelwires on the hills lose their tension.

The timing of the train at the end is so satisfyingly perfect.

@TheBrickGuy7939

2 жыл бұрын

Scottrail.

I love how the guy went "We don't need them to be stronger; we need them to break." Sometimes, improving on something has a negative effect on the current needs huh?

@Inkyminkyzizwoz

2 жыл бұрын

@miko foin That can happen with this system too - in fact in 1949 it did

@fluffigverbimmelt

2 жыл бұрын

That happens when you buy something that has not been made to the specification you need, but just has them by chance. IIRC, there was something similar with Mercedes. Unlike their competitors, they were still creating the turning signal noise only through the clicking of the relays while others were using dedicated tiny speakers. Worked well until the relays were changed in some way and did not have the familiar clicking sound anymore (because most manufacturers do not have consistency of clicking in mind when optimising durability etc)

@gordonlekfors2708

Жыл бұрын

ok time to pipe it down, buddy. obviously improvent is realtive and always in regards to the needs.

@josiahgiese7369

Жыл бұрын

No, improving something has a positive effect on the current needs, it has a negative effect on past needs

@G0RSHK0V

Жыл бұрын

I know about similar situation in NASA, when they had used shuttles, they were purchasing emergency ladders, and, at some point manufacturer decided "let's improve our materials" and changed fabric to more strong one, wich is also more slippery for space suit. Astronauts didn't know about this during training, so one of them even gained trauma because of fast descend and following collision

This concept is widely used in the US, except it's generally based on on an electrical current passed through the wires, and any break is detected and alerts the Dispatch directly. It is mechanically much simpler, just wires stretched on insulators, but this is unique in that it does the job with no power required. If it were me, I would put a small telematics box at each signal that sends an alert anytime it is tripped. If the cell network is available, they can last 5 years on a lithium battery because they don't actually use power until they are tripped. If you only had satellite available, a solar panel and battery pack could keep it going the majority of the year at least, and you add this to the mechanical signal so even in the dead of winter if the solar system dies the train still gets a warning. But having the remote alert would allow track workers to respond as soon as it happens, rather than only after a train reports it. On the other hand, maybe there is a train through there every half hour, and adding a remote alert would not gain anything!

@oscarosullivan4513

2 жыл бұрын

Send me a link

@squirlmy

2 жыл бұрын

unfortunately, setting up such a system would be a large investment, one which perhaps the government, or even specifically the rail administrators, won't see as worthwhile, certainly not in the short-run, not while they can make do with the current system. Unfortunately politics, inter-administrative, national and local, plays a huge role in these matters. On the other hand "don't fix what's not broke" also has a certain wisdom to it. This particular system has worked 140 years, can we be reasonably sure cell network or satellite systems won't have unforeseen issues that negate the benefits?

@satibel

2 жыл бұрын

For an electrical system Wire would be 5-6 grand, electronics would be a grand per box, times 4 (for redundancy), so 10 grand The advantage is that you can just solder the wires back to reset. Though another option would be to keep the existing system and just add a monitoring device that checks the state of the flags and reports it immediately.

@stevecummins324

2 жыл бұрын

Very poor radio reception for aught above MW up that way. It's not that far from glencoe... Which can't get terrestrial tv signal. Back before Iplayer etc TV licencing repeatidly took residents who had sky dishes to uk court, despite EU courts each time overruling saying that as no terrestrial service... Tv licencing was (fraudulently) attempting to charge for a service they simply didn't provide at that location.

@knightwolf3511

2 жыл бұрын

@@satibel the cost to run copper wires then you have maintenance cost old system vs new system. for this salutation it honestly makes more sense for the train driver to go slow during a warning

I consider this one of the best short descriptions of a technical device on KZread. Thanks to a cleverly setup of introduction, questions and moderation, it is the thoroughly thought-through text spoken in on and off of the railway engineer that does one make interested in railway design way beyond the pure coveredge of the 'Anderson's Piano'. So, thank you for it from Austria. /wp

I think this is a good example of how undervalued experience and knowledge have become in the modern world.

I love the environmental side of this. You're trying to upgrade a system, and you're not allowed to use (much) power. Having that reminder that not everything needs to have a million sensors and a self-learning algorithm is kinda nice.

@sublivion5024

2 жыл бұрын

There would likely be a net environmental benefit of installing a power hungry protection system becausse it would make the railway more reliable, displacing cars

@Elmojomo

2 жыл бұрын

It's not an environmental issue. It's more of a "this railway is out in the boonies and there is no power available" issue.

@jonathanodude6660

2 жыл бұрын

energy is a finite resource, for now at least.

@matt4302

2 жыл бұрын

@@sublivion5024 Seems like that'd depend on a bunch of factors. A railway monitoring system would use, give or take, the same amount of energy per mile as any other mile, but a more remote section of track would be relevant for fewer people who aren't already using it, and at a certain point, running a system 24 hours a day, 365 days a year is going to be a bigger drain than is offset by X extra loads per year of people and cargo. Remember that it is being used by some already, and the system seems like it works, for the most part, so the reliability can't be too great an issue.

@vincentmuyo

2 жыл бұрын

The power used for this is almost guaranteed to be negligible from an environmental perspective.

Sometimes an old solution is still a good solution, or at least "good enough for now." I'm willing to bet whatever technology eventually solves for this problem doesn't last 140+ years like this has.

@felixhenson9926

2 жыл бұрын

"The simplest solution is often the best solution"

@WildNorWester

2 жыл бұрын

Indeed. It's also less susceptible to becoming obsolete. I mean, there are some pieces of industrial equipment I've seen that still need Windows 3.1. Meanwhile, something purely analogue like this doesn't need to worry about that sort of thing.

@estiaanj8425

2 жыл бұрын

If whatever tech replaces it doesn't last 140 years, that would probably be because technology advances faster now, and will probably advance faster yet in the next 140 years.

@Modelero

2 жыл бұрын

They wouldn't last 140 years, because the companies making them don't want to ;)

@Scapestoat

2 жыл бұрын

That speaks more for the current rate of technological development than for the imperfect, affordable solutions of the past, though.

That timing in the end was great!

Tom, again a great video! You really have a gift to find these stories and the people who are so invested in their jobs - the Scottish engineer in this video or the Germans from Deutsche Bahn from the training center for signal workers (?)!

"There's not a user manual or a downloadable book on how to maintain Anderson's Piano. We need to pass that down through generations of technicians and engineers." Have those technicians and engineers considered making a user manual or downloadable book to make that process easier? :P

@quillaja

2 жыл бұрын

They're modern engineers so you can't expect them to do something easy and obvious.

@_zoey.17

2 жыл бұрын

Exactly what I was think! I love reading and writing manuals. I'd come down to Scotland, ask them how it's done, and then write a manual for them

@peterrose5373

2 жыл бұрын

Job security.

@ThermoMan

2 жыл бұрын

I find most engineers can’t write. I’d love to help.

@Fay7666

2 жыл бұрын

The way it looks, the user manual would be "cable go breaky, fix it"

Love Victorian era railway engineering, the ingenuity applied to problem solving without electrical and electronic systems is amazing. Having said that, as an old hand Signalman it came as a bit of a shock to see non absolute semaphore signals with red arms

@oscarosullivan4513

2 жыл бұрын

Was it a good job

@mulgerbill

2 жыл бұрын

@@oscarosullivan4513 was and still is tho I do miss the exercise these days. Sitting in front of a bank of monitors doesn't have the "feel" of 192 shiny steel levers and panoramic windows

@lesvernorn3613

2 жыл бұрын

I adore analog engineering Digitals great and I wouldn't want it to disappear. But it's not as satisfying as analog and you feel like making it is more of a challenge

Love to see old tech that's still kicking, it's so pleasing! Thanks for the captions again too!

That was very well and clearly explained. Good interview!

For those wondering why the double-semaphore has one painted red and white. A signal is painted red on one side, or yellow if it's a distant signal (iirc), and white on the other. Train drivers facing the red or yellow side must obey the signal's position, but facing the white side the position is ignored.

@robinbennett5994

2 жыл бұрын

Maybe that line runs in both directions?

@peternewton2200

2 жыл бұрын

@@robinbennett5994 yes it does. Single bi-directional line

@shughume

2 жыл бұрын

@@robinbennett5994 It does, that's why there are two signals. One for each direction. The line uses a Single Line Token Block system to ensure two trains aren't occupying the same track in opposite directions.

@oscarosullivan4513

2 жыл бұрын

Line runs both ways

@squirlmy

2 жыл бұрын

@@robinbennett5994 re-read the OP. Of course it runs both directions. I'm not sure how you missed that. 🤗

I love this mix of the old and new technology he's talking about, the balance of what works and what's innovative and potentially more capable, with an eye to geography, weather, and what's possible. That's the right mindset.

Worth watching for the scenery alone!

6:26 That's the most perfectly timed perfect harmony I've ever heard.

"A KZreadr in Network Rail PPE looking at railside engineering" usually means Geoff Marshall, these days. Good to see Tom getting some of the action.

@fetchstixRHD

2 жыл бұрын

Was slightly surprised that Tom did this rather than Geoff, especially seeing Geoff's Network Rail collabs of recent!

@simonlake_

2 жыл бұрын

@@fetchstixRHD I've watched a piece about "Anderson's Piano" somewhere before and ironically I think it was on an episode of Scotland's Scenic Railways that also featured Geoff and Vicki travelling to Corrour.

“As small as a microwave” that’s a big fricking rock

@jelle7224

2 жыл бұрын

But not as big as washing machine sized rock.

@quillaja

2 жыл бұрын

Maybe they have very tiny microwaves in Scotland?

@DerpyPossum

2 жыл бұрын

really saying som about the “big” rocks, isn’t it?

@jeff__w

2 жыл бұрын

@@quillaja They’re micro-microwaves.

This is fast becoming one of my favourite channels. Always such interesting and fascinating videos

Anderson's Piano... Definitely never heard of it, but it's simplistic and brilliant. I went on to research this more on YT and this was the only video about it. Well done!

@th.h.4947

2 жыл бұрын

I wonder if they set the tension for c1 or g1, with a precision fork, but may be h is b in your system, that's a mess, and the question is baroque or modern intonation, so do re mi fa g-enius! For windspeed, they use chimes ...

Fascinating as always. When I saw that last train coming by I thought "Wow, Tom really did a great job of setting up and timing that final shot!" Little did I know . . .

@lauraramsey1415

2 жыл бұрын

wdym Little did I know? Wasn't it timed?

Ironically the issue of not having power in remote areas also plagues the power grid. If you're trying to set up a SCADA system in the middle of nowhere to measure current flow it's going to cost $10,000 just for the transformer that gives you access to 120V/240V power for your computer systems. That's the best case scenario for an issue that by definition is under an existing power line.

@Bacopa68

2 жыл бұрын

Wouldn't solar power be a good idea? Where I live there are ton of flood gages. They are all solar powered and talk to Flood Control over the cell phone network. There's even a website where regular folks can check levels.

@UDumFck

2 жыл бұрын

Full SCADA systems are no longer needed. That’s the “revolution” of IoT. Sensors, computing and communication are now very cheap.

@Jonny_24

2 жыл бұрын

@@Bacopa68 It is a good idea but only as long as the sun is shining. At night or on a cloudy day propably not so good.

@rowanjones3476

2 жыл бұрын

Probably still cheaper than running another cable with 240V! I imagine solar cost/efficiency + battery + ever reducing watts/hz in computing gets you over the bar with sufficient reliability margin in a growing number of cases as time goes by. There’s plenty more instrumentation manufacturers could be doing to reduce power consumption and reliance on a town power supply. None of that equipment -needs- to run on a 240V supply. Open it up and you’ll find a Switched mode supply giving you 12V and 3V3 DC rails.

@HashtagBirdyy

2 жыл бұрын

@@Jonny_24 there's these crazy things called batteries. I think they might solve your problem.

Your timing is always impeccable

It's interesting-there are places on the Pacific Coast Highway in California where they use the same kind of restraints to keep the cliffs from sliding down onto the road. And since for a lot of places on the central coast, that's the only road into and out of town so if that's closed, there are huge detours to try and get to the town from the other direction.

0:37 is an incredible, incredible shot.

In a similar vein, the 1800s telegraph city-wide fire alarm system still used to this day in Boston USA because it just works.

@Bacopa68

2 жыл бұрын

We had one of those in parts of Houston, but they must have phased it out. I haven't seen an alarm box since the nineties.

@wolfgangmcq

2 жыл бұрын

San Francisco uses the same (incredibly clever and robust) system. Unfortunately they seem to be having some trouble with maintenance due to the age of the system. There was a news story a few years ago that they ran out of "out of order" notices and had to resort to duct taping red bath towels over non-working pull boxes.

That timing when you ended the video and the train passed was just so perfect :D

Another fascinating video. Alastair's descriptions and explanation of the systems was excellent.

Permissive signals, where after they're at danger you're allowed to proceed anyway just slowly and within sighting distance, are very common worldwide. France and the Netherlands are full of them. Britain is actually quite unusual in not using them anywhere.

@PinkThorn242

2 жыл бұрын

Nope, Britain has permissive signals in a lot of places too. Usually they're used for things like allowing a train into an occupied platform block section in situations where it is supposed to couple to the train already there.

@paulhaynes8045

2 жыл бұрын

People who know very little about a subject making a YT video about it? Couldn't happen.

@DrFod

2 жыл бұрын

There's lots of permissive signals in Britain, or else you'd never be able to couple two trains together or have two trains on the same platform.

@KainYusanagi

2 жыл бұрын

@@PinkThorn242 That's not even remotely the kind of permissive signal being talked about though?

@Croz89

2 жыл бұрын

I was under the impression that if the shunt signal beneath (if there is one) shows a "proceed" aspect, trains may continue at shunting speed even if the main signal is at danger. As other have said, they're mostly found near station platforms and railyards.

That was great timing with the Class 66 at the station and later the ScotRail Class 156. I'm always pleasantly surprised when Tom uploads a railway video.

Tom, your timing was perfect. Considering the infrequent service.

Impeccable timing!

Given the amount of avalanche and rockslide detection systems here in North America I’m surprised none have fitted the needs in Scotland. Also, the continuing past a “danger” signal exists here in Canada; there are two in fact: “restricting signal” and “stop and proceed signal”. Essentially, you continue at a speed below 15mph at which you are able to stop at half the view range distance (ex. You can only see 500 meters ahead so you must go at a speed in which you can stop in 250 meters). These are usually in automated CTC (central traffic control) portions of track that operate by the axels of trains completing a faint electrical circuit in the rails to trip signals and usually give this indication if there is a grounding of current or a cracked rail.

@Soken50

2 жыл бұрын

Given the average speed of tracks in the US and its infrastructure grade of D- I wouldn't be surprised all these brillant systems imediately went into the bin

@JittottiJ

2 жыл бұрын

They aren't detecting avalanches or rockslides, just the stray rocks that can cause a lot of damages despite their relatively small size.

@somitomi

2 жыл бұрын

A similar thing exists in Hungary for block signals, since they're generally out on the open track where station personnel isn't available to check that the train can pass safely despite the signal showing "stop" (danger). In general, the engineer has to wait for two minutes before proceeding at no more than 15 km/h, but the wait isn't required if on-board signaling is available and if the on-board signal shows clear beyond the signal, they engineer can speed up. (I'm glossing over nuances here for the sake of brevity)

@marco23p

2 жыл бұрын

I'm quite sure that Tom Scott was a bit mistaken on the 'always stop on red'. Google "permissive signals". Those exist in many countries, including countries with a quite modern rail network such as The Netherlands.

@joshuaritchie3836

2 жыл бұрын

In the UK are signalling system is not speed based signalling but route based signalling. The line is signalled under RETB=Radio Electronic Token Block. You simply add a Semaphore calling on Indercators in the form of a mini Semaphore signal.

That timing was incredible

That was an interesting box van that can go on the rails...

I love how Tom keeps finding interesting things in the UK to talk about. It makes me want to visit the UK to find out what interesting things I can find.

Crazy what even so old engineering could accomplish so reliably

@dakshfx

2 жыл бұрын

Ikr

@ptb2008

2 жыл бұрын

If it ain't broke....don't try and fix it

@TheLonelyBrit

2 жыл бұрын

Planned obsolescence is a big problem for the commercial world. Less so for the industrial world, but still very much a problem.

@Shuizid

2 жыл бұрын

If you want to see something REALLY crazy, look up analogous computers to calculate tides.

@richardharrold9736

2 жыл бұрын

@@ptb2008 unfortunately, the railways have been trying to fix what wasn't broken since the 1950s!

My uncle Fred is smiling down on me as i watch this lovely video; i guarantee he knew of the piano despite working in the USA govt regarding rail infrastructure & technology. ❤️❤️❤️❤️

A very nice video, thank you. It's about the same over here, for slide/fall detection. Very much more integrated with the signal system and dispatcher, but a fence is a fence at the guts of the system! I worked with the railroad for 39 years and I will say that "If it ain't broke, don't fix it" is a viable option in considering system changes or upgrades. Every system/option has its trades.

I’ve lived near there for almost 20 years, and I never knew about any of this! (Only thing that comes to mind for that railway with me is the derailment that happened in about 2010)

@Inkyminkyzizwoz

2 жыл бұрын

On that occasion the rockfall slipped under the wires, so they didn't break

@sambarker7930

2 жыл бұрын

@@Inkyminkyzizwoz ah right! I never knew too much about it to be honest (I was 10 at the time)

Having passively active systems that don't require power is just great. I whish more solutions with less or "other" power would be used. Electricity and computers have become the common standard, but aren't necessarily the best option. Thanks for this intriguing video. :)

Fascinating, especially also what methods they use to keep rocks from falling, or in other instances, to at least catch them before they reach the rails!

They still use something similar in the US along certain routes. I rode Amtrak from Omaha, NE to Oakland, CA in the 90's and along the mountain passes from Denver to Sacramento there were multiple wires stretched along beside the tracks. At that point I had no clue what it was but learned later on that they were there to detect rock falls and such. It's an amazing trip going through the mountains for sure though. I went through in December headed west and January headed east through those area's, something I truly want to do again sometime.

Ah Tom Scott doing the work that the discovery network once did and perhaps should still be doing. Great work as always Tom.