China's traffic robot cops cannot fine or arrest violators but issue polite warnings instead, and are built to work through rush hour, poor weather and extreme heat without a break. Since May, 15 such robots deployed in Hangzhou have issued over 170,000 warnings and helped cut helmetless riding and stop-line violations by more than 40 per cent, according to their developer.

But at a busy intersection in the eastern Chinese city of Hangzhou, the 1.88-m (6-foot-2-inch) robot can spot a helmetless e-bike rider, issue a polite warning and swing its…

A Chinese technology company is testing robot traffic officers in Hangzhou to automate repetitive road-monitoring duties. Reuters reported that the machines can detect helmetless…