noun
motorcycle ≤50cc; class 1 moped
Legal term for a motorcycle with engine displacement of 50cc or less, often requiring only a standard driver's license or a specific moped license. Commonly called 原付 (げんつき) in everyday speech.
原付一種は高速道路を走行できません。
Class 1 mopeds cannot be driven on expressways.
原付一種の法定速度は時速30キロです。
The legal speed limit for a class 1 moped is 30 km/h.
Abbreviation of 原動機付自転車一種 (motorized bicycle class 1). The term is a legal classification under Japanese road traffic law.