video(s) ᴴᴰ Coupled consist of R160 and R46 R trains bypass Kings Highway via Sea Beach Express

[Mr Railfan]

A not in service R160 R Train pushing a R46 R train through King Hwy on the N line while a rerouted R160 R train passes in the back. Unusual to see a 18 car long train and it being two different incompatible fleet types with an NTT coupled to a R46. The R46 was disabled due to a mechanical malfunction at 77 street and was towed back to Coney Island for repairs. Due to the delays caused by the train several R trains were sent via the West end (D Line) and Sea beach (N line) and you can see one of those passing in the background. 

 

Recorded 6/18/2017

 

 

[junjun441]

Wow that was very rare. Good catch!!!

[Around the Horn]

Awesome catch!

[QM1to6Ave]

Great catch!

 

Incidents like this make me wonder how a (theoretically) full CBTC subways system would handle a situation similar to this, where perhaps a train is totally dead and cannot communicate with the central computer (or whatever it is called, kind of like if an airplane's transponder stops working. How would the system know where the train was located, and how can it prevent other trains from crashing into it while it is being towed/repaired on the track?

[HenryB]

Great catch!

 

Incidents like this make me wonder how a (theoretically) full CBTC subways system would handle a situation similar to this, where perhaps a train is totally dead and cannot communicate with the central computer (or whatever it is called, kind of like if an airplane's transponder stops working. How would the system know where the train was located, and how can it prevent other trains from crashing into it while it is being towed/repaired on the track?

 

 

That's why there will be new block-signal systems as back ups for CBTC lines. We had discussed the issue here: 

http://www.nyctransitforums.com/forums/topic/50508-cbtc-and-a-wtf-question/

 

[+Young+]

First, nice catch and nice video!!

Great catch!
 
Incidents like this make me wonder how a (theoretically) full CBTC subways system would handle a situation similar to this, where perhaps a train is totally dead and cannot communicate with the central computer (or whatever it is called, kind of like if an airplane's transponder stops working). How would the system know where the train was located, and how can it prevent other trains from crashing into it while it is being towed/repaired on the track?

First, even with CBTC installed, there would always be at least one employee on each train in the event something happens.

Second, the central computer would notice that something irregular happened and bring it to the attention of a human being, ideally an employee. Third, the employees, on the train, in the tower and at Rail Control Center would override the CBTC system, and by communicating with each other, they would be able to safely get the train out of the way. The only way they would repair it on the track right there and then is if it out of the way of other trains to begin with, like the Holiday Nostalgia Train. If you notice, at both terminals, Queens Plaza and 2nd Avenue, that train is out of the way of other trains, in order for the regular service to continue, respectively.

[Zoey]

First, nice catch and nice video!!

 

First, even with CBTC installed, there would always be at least one employee on each train in the event something happens.

Second, the central computer would notice that something irregular happened and bring it to the attention of a human being, ideally an employee. Third, the employees, on the train, in the tower and at Rail Control Center would override the CBTC system, and by communicating with each other, they would be able to safely get the train out of the way. The only way they would repair it on the track right there and then is if it out of the way of other trains to begin with, like the Holiday Nostalgia Train. If you notice, at both terminals, Queens Plaza and 2nd Avenue, that train is out of the way of other trains, in order for the regular service to continue, respectively.

Thank you for the insight +Young+. Your posts are always informative! As for Mr Railfan.. awesome video!

[Lawrence St]

What exactly caused this R46 to become dead weight?