A moped was a form of transport used on Earth in the 20th century. It was ridden in a similar manner to a bicycle or motorbike.

The Tenth Doctor had a blue Vespa moped which he and Rose Tyler rode when visiting London during the Coronation of Queen Elizabeth II. He later gave it away to Tommy Connolly. (TV: The Idiot's Lantern)

The Eleventh Doctor also referred to a space vehicle of similar design as a moped. (TV: The Rings of Akhaten)

Patricia Ryder drove a moped. (AUDIO: Death in Blackpool)

A moped was parked in the garage when Mariah was vandalisd. (TV: Jaws of Orthrus)