A mobility scooter is an electric vehicle and mobility aid mostly auxiliary to a power wheelchair but configured like a motorscooter. When motorized they are commonly referred to as a power-operated vehicle/scooter, or electric scooter. Non-motorized mobility scooters are less common, but are intended for the estimated 60% of wheelchair users who have at least some use of their legs. Whilst leg issues are commonly assumed to be the reason for using scooters, the vehicles are used by those with a wide range of conditions from spinal to neurological. Mobility scooters differ from power wheelchairs in that they are usually cheaper, somewhat easier to move across uneven ground, and are more customizable. These scooters are built for people who have trouble walking or getting around, but don't always need a power wheelchair. They are also used by people who do need a powerchair for intermediate distances or extended standing, or those not permitted to drive cars for medical reasons. History The first vehicle somewhat resembling a mobility scooter was introduced in 1954, and billed by Sears as an electric wheelchair. It bore a large seat, an extra large battery capacity and a three-wheeled design. However the seat was shaped like a motorcycle seat - which offered no back support - making it unsuitable for disabled people suffering from common conditions such as skeletomuscular disorders or fatigue. It was not a commercial success. Description A mobility scooter has a seat over three, four or more wheels, sometimes a flat area or foot plates for the feet, and handlebars or a delta-style steering arrangement in front to turn the steerable wheels. The seat may swivel to allow access when the front is blocked by the handlebars. Mobility scooters are usually battery powered. A battery or two is stored on board the scooter and is charged via an onboard or separate battery charger unit from standard electric power. Gasoline-powered scooters may also be available in some countries, though they are rapidly being replaced by electric models. User-powered scooters are propelled by a lever used in a push-pull rowing motion to provide exercise and mobility at the same time. The tiller, with forward/reverse directions and speed controls, is the steering column central at the front of the scooter. The tiller may contain other features also, for example, a speed limiter, lighting controls (for nighttime use) and turn signals. A battery use indicator is also