It refers to a single-seat mobility aid that is battery-operated, and having between 3 and 5 wheels, steered using a handlebar, and it may also feature a horn, lights, and storage space (Thoreau 2015). Such vehicle can be operated either on the pavement or on the street, depending on its speed capability (Thoreau 2015). It is used by those with some limited degree of mobility, being able to lift themselves off or on a seating object.