rider
person who rides an animal or vehicle, either as an operator or a passenger
passenger
person who travels in a vehicle without operating it
horse rider
person who rides horses
vehicle operator
person operating any type of transport vehicle, ship, or aircraft
mahout
person who rides an elephant; elephant keeper
motorcyclist
person who drives a motorbike
squire
historical profession; shield- or armour-bearer of a knight
cyclist
person who rides a bicycle