Riyadh Welcomes The World's Longest Driverless Transit System - Yanko Design
Briefly

The fully air-conditioned stations are equipped with platform screen doors also preventing people from accessing the track. The trains are also equipped with an advanced passenger information system.
The metro will be able to hold 3.6 million daily passengers once fully completed. It will reduce road traffic quite a bit throughout the city.
Read at Yanko Design - Modern Industrial Design News
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