The vehicles are roughly divided into the following four types, but it does not mean that these types are common throughout the nation; in fact there are many areas where the distinction between full-size cars and specific full-size cars is not made or full-size cars and specific full-size cars are included in the category of medium-size cars.
概ね以下の4種類に分類されているが、この分類は必ずしも全国共通のものというわけではなく、特に大型車と特定大型車の区別がない地域や、これらと中型車を同一とする地域は多い。