World's first all-digital railway to launch in UK

It's years behind schedule and billions of dollars over budget, but London's new Elizabeth line will open later this month. The complex project is expected to revolutionise transport in the British capital, becoming the world's first all-digital railway. The United Kingdom is racing to meet its target of net-zero emissions by 2050 and believes public transport is the key. Al Jazeera's Neave Barker reports from London.

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