• The Indian Railways plans to use aircraft-like pressurised coaches in its trains for the Bilaspur-Manali-Leh line along the India-China border, which will be the world’s highest rail track, so that passengers do not have breathing difficulties on board.
• The aircraft cabins are pressurised because the air is very thin at the altitude planes fly. To prevent complications, the cabins of many aircraft are adjusted to near sea-level pressure, which makes breathing almost the same as at sea level.
• At a height of 5,360 metres above the sea level, the 465-km strategically significant line to be built at a cost of Rs 83,360 crore, will see railways’ first pressurised coaches which are currently used only in the Quinghay-Tibet Railway Line in China.
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