Ensuring reliable rail operations across India´s longest rail-road bridge
Train DetectionIndia

Ensuring reliable rail operations across India´s longest rail-road bridge

Operator
Indian Railways - Northeast Frontier Railway
Country
India
Partner
Technocom
Segment
Main & Regional Line
Application
Block Section
Products
FAdC®, RSR180
Download

The Bogibeel Bridge is India’s longest rail-road bridge that connects Assam and Arunachal Pradesh, carrying both rail and road traffic across the Brahmaputra River. Harsh environmental conditions and structural constraints made conventional signalling unworkable. The Frauscher Advanced Counter FAdC® axle counting system was selected for its proven reliability and low maintenance under these challenging conditions.

The Bogibeel Bridge, India’s longest rail-cum-road bridge at 4.94 km, is a strategically vital link connecting Assam and Arunachal Pradesh over the Brahmaputra River. As the country’s first fully welded steel bridge, it offers durability and reduced maintenance, while significantly improving mobility and regional connectivity. Its operation required a highly reliable railway signalling system to cover a 13 km block section, including the bridge span, where conventional track circuits were unsuitable due to structural and environmental constraints.

Frauscher’s Train Detection System was selected as the ideal solution. Offering SIL 4 safety, flexibility, and proven performance, it was implemented with the Wheel Sensor RSR180 at Tangani Station and Dhamalgaon Block Cabin. A Dual Detection configuration ensured reliability, while media redundancy was achieved through both OFC and Quad mediums, safeguarding against communication failures. The system’s distributed architecture with redundant power and communication further enhanced safety and efficiency.

Key features included co-operational reset functionality to minimise delays, the Frauscher Diagnostic System FDS for real-time monitoring, and patented rail claws for quick, non-invasive sensor installation. With no trackside electronics required and Indian Railways staff trained to operate it, the system delivered a cost-effective, future-ready solution tailored to Bogibeel Bridge’s demanding environment.

Exceptional reliability

The distributed architecture of the FAdC® enhanced operational safety and dependability, ensuring smooth and secure railway operations.

Seamless installation & track integrity

The Wheel Sensor RSR180 allowed effortless installation without drilling and facilitated easy detachment during maintenance, preserving track integrity.

Uninterrupted operation with media redundancy

By leveraging both Optical Fiber Cable (OFC) and Quad mediums, the Frauscher system ensured fail-safe performance, thereby minimising disruptions.

Minimal maintenance & enhanced efficiency

The absence of active outdoor electronics significantly reduced maintenance demands and eliminated the need for earthing and enhancing long-term efficiency.

Cost-effective alternative

Delivering the same level of redundancy and safety as HASSDAC, the FAdC® provided a more economical solution without compromising on performance.

Similar Projects
This might also interest you
1/5
Train DetectionUnited Kingdom of Great Britain and Northern Ireland

Wherry Lines

The Wherry Lines are railway branch lines in East Anglia in the East of England, linking Norwich – Great Yarmouth – Lowestoft. The project aimed to integrate Frauscher Advanced Counter FAdC into two external systems to mitigate against a train passing a red signal without authority on approach to level crossings.
Learn More
Train DetectionKazakhstan

FAdC® at Vhodnaya Station

ArcelorMittal is responsible for the operation of a dedicated industrial railway infrastructure located in Temirtau, Kazakhstan. At Vhodnaya station, an essential shunting yard, various goods and materials, such as polyester, zinc, aluminium, sinter, iron ore, and coke-chemical products, are loaded and unloaded. The station's robust infrastructure features 64 switching points and 68 signals, necessitating the use of a high-performing train detection system to ensure the safe and efficient management of traffic flow.
Learn More
Train DetectionUnited Kingdom of Great Britain and Northern Ireland

Axle Counter Overlay System

Between London St Pancras International Station and Farringdon Station, there is a history of frequent flooding through the tunnels that adversely affected the reliability of the existing train detection system. Due to this, the installation was non-operational during large periods. However, being a mainline section and a core route through London, high reciliation to any sort of failures is vital.
Learn More
Train Detection, ServicesIndia

Sini - Chandil Railway Line

The Sini-Chandil railway line is a crucial rail connection located in the state of Jharkhand, which lies in the eastern coastal region of India. This railway line holds significant strategic importance for the entire region, and now incorporates Frauscher solutions, including the Frauscher Advanced Counter FAdC®, Wheel Sensor RSR180 and the Frauscher Insights applications Diagnostics and Motion.
Learn More
Train DetectionGermany

Dillinger Hütte

A new ladder track was required to provide more parking tracks in the steel plant. At the same time, the layout of the dead end tracks were optimised and the efficiency of the whole depot improved by installing the Frauscher Advanced Counter FAdC®i in combination with the wheel sensor RSR180. With the implementation of the Frauscher Diagnostic System FDS, the overall maintenance costs can be significantly reduced.
Learn More