For now, the taxis are only running in a 2.5-square-mile business and residential district called "one-north," and pick-ups and drop-offs are limited to specified locations. And riders must have an invitation from nuTonomy to use the service. The company says dozens have signed up for the launch, and it plans to expand that list to thousands of people within a few months.
The cars — modified Renault Zoe and Mitsubishi i-MiEV electrics — have a driver in front who is prepared to take back the wheel and a researcher in back who watches the car's computers. Each car is fitted with six sets of Lidar — a detection system that uses lasers to operate like radar — including one that constantly spins on the roof. There are also two cameras on the dashboard to scan for obstacles and detect changes in traffic lights.