Hotshot is a new kind of train roaming the South Western Railway (SWR) network—one that doesn’t just carry passengers, but watches the railway as it goes. Hotshot is a pioneering trial train fitted with cutting-edge camera technology to help monitor track conditions and prevent faults before they happen.
Train number 450056, a Desiro unit, is now equipped with a suite of cameras designed to keep a close eye on the railway’s electrical infrastructure—day and night.
This innovative project is the result of a collaboration between Network Rail, South Western Railway, and industry partners Angel Trains, One Big Circle, Siemens, and dg8 Design. It’s the first time this technology has been permanently fitted to a train on this route, and it’s already changing how we monitor and maintain the railway.
What’s on board?
Hotshot carries two types of cameras:
- A thermal imaging camera mounted at the front of the train, scanning for signs of overheating and electrical anomalies.
- Two underbody cameras that monitor the shoe gear and third rail—critical components that power the train.
These cameras work together to provide a continuous, real-time view of asset condition. This helps maintenance teams spot issues early and respond faster.
What does the technology do?
The system is designed to detect electrical faults such as:
- Overheating components
- Faulty connections
- Signs of wear and deterioration
When a problem is detected, alerts are sent to maintenance teams so they can take action before it causes delays or safety risks.
What happens to the data?
The data captured by Hotshot helps teams:
- Plan repairs more effectively
- Prevent breakdowns
- Improve the reliability of services
It’s a proactive approach to asset management that supports a safer, more resilient railway.
What does this mean for passengers?
For passengers, the benefits are clear:
- Fewer service disruptions
- Faster fault response
- A safer and more reliable journey
By identifying potential failures before they escalate, Hotshot helps keep trains running smoothly and passengers moving.
Spread the word
When you see Hotshot in action on the SWR network, share your photo on X (formerly Twitter) using #Hotshot and tag @NetworkRailWssx and @SW_Help.
