Continuous On-Board Monitoring System (C.O.M.S)
Real time, low adhesion detection and risk management system using an on-board camera box
Rivelin Rail, continuing from RSSB and University of Sheffield research, are developing a real-time low adhesion detection and friction estimation system. COMS provides continuous rail and wheel contamination monitoring, without requiring brake input. It provides immediate notifications to drivers and key performance information, including contaminant coverage and friction estimation, are wirelessly transferred to operators.
Accurate estimations
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Immediate notifications
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Data transferred to route controllers
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Targeting and optimisation
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Reduce requirements for ‘boots on ballast’ inspection
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Accurate estimations ✳︎ Immediate notifications ✳︎ Data transferred to route controllers ✳︎ Targeting and optimisation ✳︎ Reduce requirements for ‘boots on ballast’ inspection ✳︎
Leaf Contamination
Iron Oxide
Clean Rail
2025
Camera Box
By Rivelin Rail →
Real-Time Railhead Friction Estimation
Using Machine Learning: Development of an On-Board-Train Data Capture System
COMS combines local data with high-resolution images. It delivers accurate and granular predictions about contaminant coverage and friction at the wheel-rail interface.
AI model trained with validated friction measurements, using the Rivelin Rail Tribometer System, can be mounted to monitor rail or wheels, in a range of configurations on passenger or freight.
Currently being trialled on Transport for London vehicle. Operational trials planned for autumn 2026.
Trials indicate that the model can effectively estimate railhead contamination and friction to identify potential low-adhesion hotspots in real-time.
Performance Benefits
Accurate estimations of local adhesion conditions
Immediate notifications to drivers
Data transferred to route controllers to support operational decision making
Targeting and optimisation of rail cleaning
Reduce requirements for in-person ‘boots on ballast’ inspection
Provides valuable insights for mitigating risks, increasing performance, and improving overall safety.
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