Kolkata Metro: The only Metro of IR. কলকাতা মেট্রো : তিলোত্তমার জীবন রেখা ।। - PPG

That's why I mentioned, 'except in some rare cases'. :)
This is IR. It's really dangerous to make any generalized statement. They always manage to have exceptions!
But for the most part, all link and slip trains run with an anti-telescopic SLR to reduce potential fatalities in head-on collisions and any accidental collision with the locomotive when it is being attached. In some cases sectional coaches are attached just for the sake of having the second SLR.

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The Production of Self Generating Coaches Shouldn't have been stopped totally by Railways as EOG's become a headache for trains with Slip Coaches, also Railways is claiming for less usage of Diesel by Electrification of Tracks on the other hand Railways is using high amount of diesel to run LHB trains, so claims of saving natural resources is somewhat nullified.
I think the Production of Self Generating Coaches needs to be started at least for trains with Slip Coaches like Paschim Express, Goa Express, Rajasthan Sampark Kranti Express, Dehradun Madurai Express etc.

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Yes they have to Keep Self generation system you know why? Because they dont need Diesel to generate power to feed boogie Load. This LHB system also good but a separate Diesel genrator needed to add this makes no use compared to ICF as weight of Deisel Generator is added in LHB system only thing is Belt Friction on torque and some Suspension Design is improved. Need to Research a way to stop using Deisel generator use in LHB and redesign the LHB with Self Generation system which will be little lighter than ICF rakes.

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But this Self generating system is good For sleeper class and Some express trains. If AC train means their it is mandatory to add additional generator Slip to the train so conclusion of this discussion is IR should not stop ICF production they are required for Normal Express trains and for AC & LHB trains IR should look after a new technology to reduce consumption of Deisel for generators to feed All AC & LHB trains.IR should think over Renewale Energy for this Problem like Solar Power or any other suitable source by which we can atleast reduce 50% cosumption of deisel comparing present 100% consumption.

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