Train customers in Sydney’s south are a step closer to more frequent and reliable services after the NSW Government signed $110 million worth of new signalling contracts.

The deal with Siemens Mobility Pty Ltd will deliver the first digital signalling on Sydney’s rail network, between Sutherland and Cronulla, allowing drivers to receive information directly into the train cab rather than looking at fixed ‘traffic light’ signals outside.

“It might sound like a minor change but it’s going to make a huge difference to the way our rail network operates,” Minister for Transport and Roads Andrew Constance said.

“While traditional signals have served Sydney well for decades, they are fixed at set locations and limit the railway from operating at its full potential. This technology allows the track and train to talk to each other continuously.”

Member for Heathcote Lee Evans said new technology will give network controllers the ability to make the best use of the track space available.

“That means trains can run closer together, safely, and once installed across the network, will allow services to run more reliably which is great news for our commuters,” Mr Evans said.

“It will also mean when an incident happens, the network can recover more quickly.”

Construction between Sutherland and Cronulla will start this month with the new system due to be ready for operations in 2023.

Member for Miranda Eleni Petinos said it was exciting the T4 line would be the first to benefit from this new technology.

“As one of the busiest train lines on the network, it’s really great to see this multi-million dollar investment for the T4 bring more frequent services one step closer, increase safety and provide a better public transport experience for all commuters.”

Member for Cronulla Mark Speakman said the technology would future-proof Sydney’s rail network.

“This is modern, internationally-proven technology that will digitise train signalling and control and ensure optimum performance. And the best part is that Shire commuters will be among the first to benefit from these new systems.”

The work forms part of the NSW Government’s $5.3 billion More Trains, More Services Program.

As part of the program, Sutherland Shire commuters can look forward to a 30 per cent increase in services on the T4 Line, with extra services from Cronulla, Waterfall and Hurstville.