General Railway Security

Sensonic and Chicago Transit test latest rail safety and security innovation

2025-06-13 · Daniel Pyke · 5min

We are pleased to announce an exciting agreement with the Chicago Transit Authority (CTA) on a new pilot programme. This initiative, recently approved by the Chicago Transit Board, aims to deploy Sensonic's cutting-edge Distributed Acoustic Sensing (DAS) technology to automatically detect intrusions and fallen objects on the CTA's rail right-of-way, enhancing railway safety and operational reliability.

 

"Sensonic is proud to bring cutting-edge fiber optic sensing technology to the CTA that enhances rail safety and security in Chicago," said Ashish Upadhyay, CEO of Sensonic.

"By combining Distributed Acoustic Sensing and AI, we’re enabling real-time detection of trackside intrusions and fallen objects along the rail corridor. This actionable intelligence is key to building safer, smarter, and more resilient transit systems."

 

The CTA's decision to advance this pilot underscores a shared commitment to proactively addressing security challenges and improving service for riders. The project will leverage our innovative solution that transforms existing fiber optic cables into a continuous network of highly sensitive acoustic sensors. By monitoring minute changes in light scattering caused by acoustic vibrations, such as those from footsteps, vehicles, or falling debris, our system can distinguish between normal train movements and anomalous events.

We’re providing the capacity to cover up to a 50-mile range with a single sensing device, offering expansive, real-time monitoring capabilities. In the event of a person or object entering the tracks, our system's intelligent algorithms analyse the vibration patterns they cause to trigger a real-time alert, notifying appropriate CTA staff for swift intervention.

The 12-month pilot will begin with a feasibility phase, during which we will work with CTA to identify optimal deployment locations across various track types, including elevated, grade-level, and subway sections. This initial phase will include in-depth feasibility testing, equipment purchase, and installation, followed by a hardware installation at one selected location.

We have delivered successes enhancing rail safety and security globally, having partnered with rail network providers in Austria, Brazil, Czechia, India, Portugal, and Spain to monitor right-of-way intrusions involving people, large objects, and large animals. Our extensive international experience positions us as an ideal partner for the CTA's Innovation Studio, which seeks to integrate advanced technologies to create a safer environment, reduce delays, and improve service reliability for Chicago's transit system.

 

An example video of trespass detection in an operational railroad

 

Through this pilot, Sensonic and the CTA aim to establish a reliable solution for detecting and responding to right-of-way intrusions in real-time, ultimately preventing service delays and ensuring a safe journey for everyone.

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