​A drone that can transport humans has been given the go ahead to carry out trials in the US.

The Ehang 184, which was first unveiled at CES 2016, is a small, personal helicopter that can transport a single passenger. Rather than one large rotor above the body, the "taxi drone" has four rotors underneath the body, resembling a remote control drone.

Ehang will start running tests in Las Vegas later this year in the hope that it could eventually be used as part of the state's transport system, according to a local publication.