The firm is partnering with Nvidia-backed startup Serve Robotics who say the robots could help to reduce traffic congestion and air pollution, while improving the efficiency of last-mile delivery.

Serve began operating in Los Angeles this year to make deliveries from some 200 restaurants across the city. It said the number of deliveries have grown over 30 per cent month over month since the service launched.

“We are thrilled to be growing our partnership with Uber,” said Dr Ali Kashani, co-founder and CEO of Serve Robotics. “This partnership is a major step towards mass commercialisation of robotics for autonomous delivery.

“We are excited to continue our work with Uber to bring this innovative technology to more cities across the country.”

Serve says its sidewalk robots are capable of Level 4 autonomy, which is described by the Society of Automobile Engineers as being able to handle all aspects of driving without human intervention, in certain conditions...