Railroad 101: Signaling Systems

[jimpeter]

Great stuff, thanks! Regards from Baltimore.

[lawrencewheeler]

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

[eddieafterburner]

11:20 Now _that_ right there is some artwork!

[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

[lorenzoboyd]

Correction - adjacent blocks have opposite polarities.

[frankmosch]

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

[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.

[BlackPearlMusicVideos]

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

[jaysmith]

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

[jakem]

Multiple errors in the PowerPoint. Mainly grammer and inconsistencies.

[ShadowJax]

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

[peckelhaze]

Very interesting. Lots I didn't know,

[djwilson]

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

[newstorycommunitybooks]

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.

[ianburnett]

Do not let terrorists know about how track Ciruits operate.

[joeturner]

Your system seems so complicated compared to the UK.

[franklinmartini]

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