Self-driving buses are being tested in China and they're the largest of their kind yet

A small fleet of self-driving public buses has started running on the roads of China's tech district of Shenzhen, Guangdong.

The four buses are currently on trial, and will run over three stops on a public road about 1.2 km (0.75 mi) long.

But where typical self-driving bus projects involve smaller shuttle capsules, the four buses are nearly full-sized buses, able to carry up to 19 passengers.

Other recent autonomous shuttles around the world have typically looked more like this: