Northern Railway conducted a successful up-trial of new air braking coaches on the Kalka-Shimla heritage track on April 16, 2026. The trial focused on evaluating the load-carrying capacity of the coaches during the uphill journey and testing the power supply via generators. This technological upgrade marks a significant shift from the traditional vacuum brakes to a more efficient and modern braking system.
Why is the new air brake system important for this route?
The transition to air brakes is a major milestone for the Kalka Workshop and Northern Railway. This system offers much better control and efficiency, which is crucial for the steep slopes and sharp turns of the Himalayan terrain. By replacing the century-old vacuum technology, the railway ensures that the heritage line remains safe for modern travel needs. The system was developed indigenously, supporting the vision of self-reliant engineering in Indian Railways.
Technical details and trial outcomes
The recent trial verified that the coaches could handle the mountain climb without any performance issues. Engineers also checked the generator systems to ensure consistent lighting and power inside the coaches. Before being introduced to regular service, these coaches underwent rigorous evaluation by the Research Design and Standards Organisation (RDSO). The Commissioner of Railway Safety (CRS) provided the final verification for these upgrades.
- Trial Date: April 16, 2026
- Route: Kalka-Shimla Narrow Gauge
- Technology: Indigenous Air Brake System
- Key Authorities: Northern Railway, RDSO, and CRS