12263/64 Pune - H. Nizamuddin AC Duronto - यह है पुणेकर वालों की राजधानी जिसका speed है सबसे Great, नहीं पहुंची है अब तक अपने लक्ष्य स्थान पर Late. - Sahil Khandare

Yes, might be. Anyhow, railway would bring some of them to active service albeit in tourist and special trains

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This is nothing new. 2 tier non-A/C sleeper coaches were used for a long time on IR, well into the 80's.
They were discontinued as the 3-tier design was found to be better for increasing passenger capacity and increasing the revenue per coach.
Putting back the middle berth is a relatively trivial task. Coaches which will be brought back into service will mostly be given back their middle berths.

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Can IR use it as additional RCA coach? Assign Upper birth to 1 Passenger and sale 3 or 4 RAC tickets for Window Bench. This will help to carry more capacity and may not need additional class. Can be added to more bz routes.

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Anyways, to maintain social distancing railways are planning to keep middle berth vacant as per some news articles.
These coaches would come handy at that time.
No harm in introducing a higher priced sleeper class version without middle berth again than re-fitting these coaches with middle berth.
It would get good response from public as people will be more hygiene conscious now

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Chances of this are very low...its time for distancing

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