In a significant leap toward modernizing heritage rail travel, Northern Railway has officially introduced the first rake of Narrow Gauge (NG) coaches equipped with an indigenously developed air brake system o­n the prestigious Kalka-Shimla UNESCO World Heritage Railway.

The upgraded rake commenced its inaugural journey on February 13, 2026, o­n Train No. 52453 Kalka-Shimla Express. The train, consisting of a 7-coach composition (14 units) and hauled by Loco No. 714 ZDM3D, departed Kalka station o­n schedule at 06:20 AM.

The transition from traditional braking to the modern air brake system marks a technical milestone for the Kalka Workshop, where the conversion was executed. Key highlights of the project include:

• In-House Development: The air brake system was designed and integrated locally, showcasing Indian Railways’ commitment to Atmanirbhar Bharat.
• Enhanced Safety: The coaches feature modified bogies and trolleys upgraded to meet rigorous safety standards, essential for the steep gradients and sharp curves of the Himalayan terrain.
• Operational Efficiency: The new system provides superior braking controllability and efficiency compared to older vacuum brake systems.

Safety remains the paramount priority for this World Heritage section. Before entering passenger service, the coaches underwent a comprehensive evaluation process:

1. RDSO Trials: Extensive oscillation trials, Emergency Braking Distance (EBD) tests, and controllability trials.
2. Statutory Compliance: Successful validation by the Commissioner of Railway Safety (CRS).
3. Operational Sanction: Final approval for passenger service was accorded by the General Manager, Northern Railway.

Shri Ashok Kumar Verma, General Manager, Northern Railway said, "The introduction of air brake coaches reflects our dual commitment to preserving the heritage of the Kalka-Shimla line while ensuring that our passengers benefit from modern safety standards and cost-effective technological advancements."

This modernization effort ensures that the century-old charm of the Kalka-Shimla Railway is backed by 21st-century engineering, guaranteeing a safer and smoother ride for tourists from across the globe.

Source/NR