हम हवाई जहाज़ उड़ाने वाले, फिर भी फ़िदा हैं, पटरी में दौड़ने वालों पे. - SK Mangla

There are two common point: CBC & Speed permitted!!
The inclusion of P-7 & CBC lead consistent trial to get into final Banker non-requirement with desirable speed !!
Raj, Hybrid, DRNTO all do have CBC Coupling & with less load, P-4 manage 65 KMPH with Raj/DRNTO Rake, which cant be possible for 25 Coach Rake (while it can ascend but with slow speed, which can lead congestion on busy track)!!

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Sirjee, 24 coach cannot ascend this section even with CBC if P4 is used. It cannot even start on this gradient. It will stall and roll down. However if it enters the section with a momentum of 110kmph, it will still stall after moving for a certain distance

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PS: The article discussed abt P-7 ability @ 65 KMPH but nt about p-4 disability et all!!
Was trying to find but didnt find any P-4 topic n would be grateful if been provided!!
PS: GT/Tamil Nadu use CBC Coupled ICF Caoch, not Hybrid ones!! Hence they still b banked!!

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Check 916261-8. Reply no 8 in this very same post which provides the P4 capabilities
/blog/post/916261/8

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This is just a function of Loco / Total Tonnage for Hauling & Coupling type. Has nothing to do with LHB / ICF / Hybrid

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