The limiting value of cant excess for Broad Gauge is
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- Cant excess must be within permissible limits to prevent excessive lateral forces on the rails, which can cause derailments.
- For Meter Gauge (MG), the limiting cant excess is usually lower than Broad Gauge.
Step 1:Definition of Cant Excess
Cant excess is the difference between the actual cant provided on a railway track and the equilibrium cant needed for a given speed and curvature.
Step 2:Standard Limiting Value for Broad Gauge
As per Indian Railways standards, the maximum cant excess permissible for Broad Gauge (BG) tracks is 65 mm. This is to ensure a safe and smooth ride while maintaining track stability.
Step 3:Conclusion
Since the maximum permissible cant excess for Broad Gauge is 65 mm, the correct answer is (C) 65 mm.