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-detectionCanada

Edmonton Metro Line

The Edmonton Metro Line was experiencing significant issues with its newly installed Communications Based Train Control (CBTC) signalling system, which did not perform to the operator‘s expectations. The city was forced to run an incomplete schedule with reduced train speed and frequency which negatively affected commuters and the city of Edmonton in general. Finally in 2019, the operator decided to install a new system in cooperation with Frauscher.
Learn More
train-detectionTaiwan

Shalun Signaling

The Shalun Line is frequented by four-car-trains and located in the south of Taiwan. Tropical conditions with temperatures between 22 and 28 degrees and high humidity are not the only challenge the Frauscher Axle Counter Solution has to deal with.
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
train-detectionCanada

Toronto Transit Commission

The Toronto Transit Commission (TTC) Line 1 Yonge-University is Toronto’s longest subway line, with track circuits utilized for signalling. Due to an increasing number of daily passengers and an aged system the need for upgrading without interfering with the daily operations became readily apparent. It was further required that the new signalling system functions independently of the existing system. It would provide CBTC fallback functionalities, and work as an overlay to the current track circuit-based system.
Learn More
train-detectionChina

Beijing Metro Line 12

The Beijing Metro Line 12 is the first metro line that combines Frauscher Advanced Counter FAdC® and Railway Signal Safety Protocol Type I (RSSP-I). The line is currently under construction and expected to be put into operation at the end of 2024.
Learn More