Cutting edge technology helping Network Rail to almost double track maintenance capacity: New Measurement Train

Monday 11 Feb 2019

Cutting edge technology helping Network Rail to almost double track maintenance capacity

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Network Rail is boosting its capacity to identify and fix track defects using cutting edge technology, reducing delays caused by track faults, improving safety and saving the taxpayer millions of pounds.

A key part of Network Rail’s ‘predict and prevent’ strategy, Plain Line Pattern Recognition (PLPR) is helping to deliver a safer and more reliable railway for the 4.8 million passengers who rely upon it every day. Over Control Period 6 (2019-2024), PLPR will cover almost one million (975,000) miles of railway track across Britain.

A fleet of five monitoring trains, including the New Measurement Train (NMT) – the most technically advanced train of its type in the world – use PLPR to monitor and record track condition information, and can find issues such as missing fasteners, excess ballast and ineffective rail clamps. Cameras mounted underneath the trains capture an image every 0.8mm, taking 70,000 images per second at the top speed of 125mph, with potential defects identified sent to a PLPR facility in Derby for closer examination by Network Rail’s team of inspectors. Local track section managers are then notified of confirmed defects, enabling engineers to target track maintenance more effectively.

PLPR-equipped trains have replaced manual inspections on 8,500 miles of track, improving the accuracy and frequency of inspections. With the potential to reach 15,000 miles, the aim is to increase these live inspections – a target has been supported by the opening of a second PLPR facility in Derby in January 2019.

As well as benefiting passengers, PLPR provides a safer method of track inspection by reducing unnecessary track visits and helping to get boots off the ballast.

PLPR also represents an efficient use of public money, having saved the taxpayer an estimated £2.2m so far, with further savings anticipated over CP6 and beyond.

Steve Quinby, Network Rail’s Head of Delivery [Data Collection] for Asset Information Services, said: “Operating a safe and punctual railway network spanning 20,000 miles, on which 4.8 million people rely each day, is a significant responsibility.

“PLPR technology is helping us meet that challenge, providing improved asset information so we can better understand how quickly our assets degrade, and allowing us to target track maintenance more effectively. This means we can identify defects before they become a safety issue or affect performance.

“PLPR is fundamental in helping us to be safer and more efficient. In January, we opened a second PLPR facility in Derby that increases our capacity and resilience to monitor, inspect and fix track faults, to the ultimate benefit of passengers.”

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Jack Harvey

About Network Rail

We own, operate and develop Britain's railway infrastructure; that's 20,000 miles of track, 30,000 bridges, tunnels and viaducts and the thousands of signals, level crossings and stations. We run 20 of the UK's largest stations while all the others, over 2,500, are run by the country's train operating companies.

Usually, there are almost five million journeys made in the UK and over 600 freight trains run on the network. People depend on Britain's railway for their daily commute, to visit friends and loved ones and to get them home safe every day. Our role is to deliver a safe and reliable railway, so we carefully manage and deliver thousands of projects every year that form part of the multi-billion pound Railway Upgrade Plan, to grow and expand the nation's railway network to respond to the tremendous growth and demand the railway has experienced - a doubling of passenger journeys over the past 20 years.

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