Sports models.Quad bikes in the general use category typically have. youth models (also marketed as fun models) and transition models. General use models (commonly marketed as utility, work or agricultural models). All vehicles that meet this description, including those that are propelled by a combustion engine and an electric engine, are considered to be quad bikes.Quad bike models are categorised as. About quad bikesA quad bike (also known as an all-terrain vehicle or ATV) is an off-road motorised vehicle that travels on four wheels, with a seat designed to be straddled by the operator and handlebars for steering control.