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R21 and r68 question.


pelhamlocal

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BE065761.jpg?size=67&uid=6cb0a3a7-a85e-4318-93c3-0a362e342fa2&uniqID=240d2bbb-f0aa-435b-8df7-f291744a0ee6 See that little box inside the end gates. I saw an image of an R68/R68a not sure which on this form. What are those, and why does the 68's need them, since they are fully manned trains?thanks

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Several books will be more detailed, but the ATO system on the R22 trial consisted of wayside signaling, a device (control box) in the cab, and wiring along the track length connected to a master computer in the dispatcher's tower. The cab control box would send analog signals, indicating the distances, speed, length, among other factors. The computer would then control the train speed and stopping distances. Intervals between runs were fixed by the computer. The system was "fail safe"; if one relay or signal failed to work the train would fully stop.

 

After 1964 the R22 shuttle trial would serve as the basis of the technology for the London Victoria Line and PATCO.

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I hate to sound like a know it all, but that's either an R21 or R22 car. Those distinctive storm doors were found only on those cars.

 

I don't really care about that. I didn't understand his question at all. But thanks anyway for telling it was an R22 :)

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