Britain's new digital railway network

Britain's rail lines are at capacity with more people travelling than ever before. But what can be done?

The UK railway network is at breaking point. Each year there are more people using it; last year there were 1.6 bn passenger journeys.

There has to be a drastic increase in capacity. This usually costs an enormous amount of money, so an alternative approach has been drawn up.

It's called the digital railway.

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Video script: Ed Barrett, from the Department of Science and Technology Studies, University College London