T-Mobile has installed the GreenRoad Safety Center to an additional 250 of its company cars.

After introducing the system in 2006, the company saw crashes reduce by nearly 50%.

In 2007, it saw savings of £421,000 in crash damages and more than £20,000 in fuel.

By analysing each T-Mobile driver’s performance and continuously providing them with feedback, GreenRoad improves driving skills and safety.

The dash-mounted system display uses colour classification: green indicates safe driving, amber needs attention and red is high risk.

Feedback is also available in real-time using SMS, emails and Safety Center’s password protected website.

“Implementing Safety Center has been one of our best business decisions.

"We’ve experienced a phenomenal increase in safety, fuel and driver performance, all while reducing our carbon emissions,” said Nigel Wilkinson, head of health and safety at T-Mobile.

“Our drivers have also embraced the safety stars programme, which has incentivised them to be at the top of our driving league tables.”