Why railway tracks are covered in stones but metro tracks are not ?
- Crushed stones on railway tracks absorb heavy train vibrations and prevent tracks from shifting position.
- These ballast stones also provide crucial drainage, stopping rainwater from pooling beneath the steel rails.
- Metro trains operate on concrete slab tracks, which handle frequent trips without needing loose stones.
- Concrete metro tracks lower ongoing maintenance expenses despite having higher initial construction and setup costs.
Source: firstpost.com
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