The arrest was made after videos circulated on the internet showing a man riding an electric skateboard right behind a double-decker bus along Tai Chung Kiu Road, before he fell off the board and was left lying in the middle of the road.
A police spokesman said officers began looking into the incident after the videos came to their attention, and they arrested the 18-year-old man on Monday.
The man is suspected of driving an unlicensed vehicle, using a vehicle without insurance and failing to wear an approved helmet.
The man was released on bail pending further investigation.