A bi-directional vehicle is a vehicle that can be driven in either direction, forwards or backwards. Usually, the term refers to rail vehicles, such as trains or trams, that are equipped with operating cabs at both ends. These vehicles generally have entry and exit doors on either side of the vehicle. Aside from eliminating the need for complicated railway infrastructure to turn vehicles around, the presence of doors on either side of the vehicle enable the use of island platforms. These extra doors come at the cost of reduction of seating on board the vehicle. * v * t * e