Car makers are racing to bring self-driving vehicles to city streets (Toyota has just announced a $500,000 investment in Uber’s driverless car program), but the troubles suffered by Waymo suggest that it might still be several years before the tech is safe and reliable enough for real roads.

According to The Information, despite Waymo’s ambitious plans to deliver a self-driving taxi service to passengers near its headquarters in Phoenix, Arizona later this year, its cars are still struggling to navigate a junction just outside the office, Driverless minivans have been known to stop suddenly at the intersection, presenting a risk for motorists who aren’t used to such behavior.
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