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聽Driverless cars appear unstoppable 鈥� except of course you can simply walk in front of one and force it to brake. Could this conundrum eventually mean a return to a dystopian world of segregated urban highways?

...what action should a driverless car be programmed to take when it sees a cyclist or a pedestrian in its path? And what happens if people crossing roads learn they can simply walk in front of AVs which will be forced to brake?

Robin Hickman, a reader in transport and city planning at University College London鈥檚 Bartlett School of Planning, believes this makes driverless cars 鈥渦nworkable鈥� on busy urban streets.

鈥淚n terms of the algorithm for dealing with obstacles that move in unpredictable ways, like cyclists or pedestrians, I would say that鈥檚 unsolvable,鈥� says Hickman. 鈥淚f a pedestrian knows it鈥檚 an automated vehicle, they will just take the priority. It would take you hours to drive down a street in any urban area.

鈥淎nd in the context of India or China,鈥� he adds, 鈥渨here there are different types of vehicles, more pedestrians, more cyclists, I would say it鈥檚 even more difficult for the AV to mix with all these unpredictable users.鈥�

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