Railroad 101: Signaling Systems

[@eddieafterburner]

11:20 Now _that_ right there is some artwork!

[@phuturephunk]

You gotta give the FRA a break though. Unlike people like the CSB they give the FRA like 10 bucks a year to operate and make presentations.

[@lawrencewheeler8868]

" if it ain't all red, it ain't red at all"!

[@toddavis8603]

Excellent tutorial.

[@jaysmith1408]

Dear god, did Dick study the material at all or ignore the promper and just read his script verbatim?

[@1999fxdx]

Excellent

[@lorenzoboyd6889]

Correction - adjacent blocks have opposite polarities.

[@georgen9755]

who are you ?

[@carrigym]

Great video... at 33:27 you guys note that RED over RED over YELLOW is "SLOW APPROACH", this is incorrect, this is a restricting signal.

[@davidshelton7208]

Michael Carrigy I thought restricting was lunar white

[@carrigym]

That is a stop and proceed signal

[@davidshelton7208]

Maybe it's different depending on the system. My experience is with CSX and their old system from the SCL here in Florida.

[@bagnome]

That's my guess. I think we have to remember there is no standardization of signaling across railroads. Just safety rules from the FRA the roads have to abide by when devising a signaling system.

[@exw.r3669]

Every railroad has there different signal system

[@dwayneday6097]

By the twist wire under the rail bed

[@ArtStoneUS]

Does this mean that with PTC, trains can be spaced closer together because you don't have to assume worst-case? The system could recognize that different trains run at different speeds and have very different stopping distances. A 900 ft train in a 13,000 foot block has a lot of buffer. However, it might be able to stop much quicker and the train following it may not be able to stop in time. It seems like a very complex calculation. Adding that maybe one of the trains has electronically activated braking. When anti-lock brakes came out on cars, initially they created more accidents. When the first car has ABS it can stop quickly but the car without ABS behind it cannot stop in time

[@MelioraCogito]

Very informative.

[@faainspector6353]

MelioraCogito

[@BlackPearlMusicVideos]

How does one actually wire a relay? Logic means nothing without hard-wiring.

[@dtvjho]

A relay consists of a solenoid, with a central sliding pin mechanically hooked to an electrical switch. The coil is energized by running a current through it, usually a low voltage e.g. 12V, and the coil magnetically pulls / retracts the slider in. The switch itself is typically connected to a circuit separate from the coil. On a track, the coil is tied into the track circuit, while the switch is tied into the signal system. It is possible for these to freeze up in severe cold.

[@peckelhaze6934]

Very interesting. Lots I didn't know,

[@Shadow750Jax]

Very interesting, but a dynamic presentation would be more informative rather than a slide show with minimal animation.

[@MikeWiggins1235711]

You have just given the perfect analysis of what is known as "Death By Powerpoint".

[@marko11kram]

so, YOU make one

[@Whiteshell204]

Great video, well done

[@frankmosch877]

One of my favorite aspects of the railroad is the signaling systems and switch control,the signals themselves the bright red/yellow/green,even frost white Wich indicates a speed restriction do to excessivley hot or cold weather wich will effect the rails causing a dangerous situation...🙁😲😲..Frank misssssschief

[@jakem1014]

Multiple errors in the PowerPoint. Mainly grammer and inconsistencies.

[@davescott2485]

Quite enjoyed this...

[@djwilson48625]

Wow, this is as dry of a demonstration as it gets, plus the heavy breather...

[@medgirl320]

cool!!!

[@WatDaMattaForYou]

Warm!!!

[@tynishajohnson13]

Great information

[@KhoaNewZen]

Good information.

[@newstorycommunitybooks4594]

Very interesting and a classic example how historically simple concepts can get complex & confusing quickly. The industry still seems behind when you note that the technologies associated with GPS systems, automatic driving cars (far from fool proof, but have to deal with traffic pedestrians and turning and lane changes) and flying drones (controlled from other continents) exist with little application to railroading. WE CAN do better.

[@joeturner1597]

Your system seems so complicated compared to the UK.

[@HBC101TVStudios]

It is similar to UK signals except every railway company in the US has different railway signaling. Federal wise it's just a simplified version of the British railway signaling system

[@HBC101TVStudios]

The UK uses ERTMS while USA uses CBTC

[@ianburnett7333]

Do not let terrorists know about how track Ciruits operate.

[@Deathscroll41]

😑

[@franklinmartini8264]

Those American accents are difficult to listen to. Like fingernails scraped across a blackboard.

[@marioxerxescastelancastro8019]

BORING.

[@andrehall3221]

Very informative.

[@davescott2485]

Quite enjoyed this...

[@captainmorgan757]

Who's Quite and how do you know that he enjoyed it?

[@davescott2485]

@@captainmorgan757 Guffaw!!