Vehicles from the self-driving taxi company Cruise are returning to city streets in the US around six months after a serious accident. The subsidiary of US car giant General Motors has announced that the vehicles will initially only be driven by humans in order to update map data and collect fresh information about the surrounding area. The first city is Phoenix in the state of Arizona, with more to follow. In this phase, fresh information about traffic lights, lanes and traffic routing will be collected, Cruise explained. In a second phrase, autonomous test drives with safety drivers at the w…