In our country, as regulated by Decree 341/2002 and a EU directive. Motored bike (gasoline) have to meet the requirements: max. speed: 25 km/h volume: to 50 ccm max. power: 1kW retain the character of bicycle But can not call it a motored bike /motorbike / moped! The correct name is "bicycle additionally supplemented with auxiliary small engine". Need not to have a driver's license, insurance, helmet, lights, etc.