Buses installed with anti-drowsiness systems for drivers could soon be on the road, with the city’s biggest bus operator announcing that testing was nearly finished for the new safety measure.

The city’s largest bus company, Kowloon Motor Bus (KMB), said on Saturday that tests of anti-drowsiness devices on 16 buses were in the final stage. The system was designed to detect a driver’s level of alertness through facial recognition software – and emits a warning if the driver dozes off.