Scooter engine is either attached to the rear axle or under the seat with a continuously variable transmission transferring power to the rear wheel. Most jurisdictions have no legal definition for "scooter". In general, 50 cc and under scooters are classified in most states and countries as a moped and are subject to reduced safety restrictions and licensing fees. Some of these modern high-end scooters also come with comfort features such as windshields, heated hand grips and full instrumentation (including clock or outside temperature gauge.) scooter used is popular, too. In many localities, certain road motor scooters are considered by law to be in the same class as mopeds or small motorcycles and therefore they have fewer restrictions than that of larger motorcycles.