South Western Railway (SWR) and Network Rail have begun a year-long trial of thermal imaging technology designed to identify infrastructure faults before they cause disruption. The initiative centres on a newly equipped Class 450 train, now named Hotshot, which has been fitted with cameras to monitor track conditions across London, Surrey, Hampshire, Berkshire and Dorset.
Two cameras have been installed on the train: a forward-facing thermal imaging camera that monitors electrical issues on the track, and a second camera underneath the train to inspect the shoe gear and third rail that supply power. The images captured will provide engineers with real-time alerts of potential faults such as overheating or loose connections, improving safety, reducing maintenance costs and helping to manage resources more effectively during incidents.
The issues Hotshot is designed to detect typically cause around 200 minutes of delays, with severe cases involving conductor rails leading to more than 2,000 minutes of disruption. A previous smaller-scale trial on the SWR network enabled engineers to fix a fault near Ashtead within 48 hours, avoiding disruption that would previously have resulted in 2,500 minutes of delays.
Rail Minister Lord Hendy said: “This Government is fundamentally reforming how our railways are run – creating a network that works better for the people and freight using it.
“The cutting-edge technology that the integrated South Western Railway is trialling is key to achieving this and will serve as an example of the kinds of smart investments publicly owned rail companies can implement to improve services for passengers.
“Upgrades like this will prevent disruption and reduce delays – supporting growth, jobs and homes as part of the Government’s plan deliver an efficient and reliable railway.”
Neil Drury, Engineering and Infrastructure Director for South Western Railway, speaking on behalf of SWR and Network Rail, said:
“Much like our famous ‘Flying Banana’ train which helps monitor the tracks, you can now look out for Hotshot. We hope this innovative collaboration between SWR, Network Rail, Angel Trains and our other partners will identify potential infrastructure issues before they escalate, helping to reduce disruption on the network and keep our customers moving.”
Barry Fox, Head of Product Management at Angel Trains, said:
“We’re proud to be supporting the introduction of this technology on passenger trains. Continuous monitoring of the infrastructure offers real value in helping deliver a more reliable railway for passengers. This has been made possible by working closely with our customers and suppliers to deliver a fully integrated solution.”
The project is a collaboration between SWR, Network Rail, Angel Trains, One Big Circle, Siemens and dg8 Design, with Angel Trains designing, managing and funding the trial. If successful, the technology could be rolled out across more of the SWR fleet to expand monitoring coverage.
The initiative follows similar thermal imaging developments introduced by South Eastern Railway, another publicly owned operator within DFTO, which has expanded monitoring across its own network.
