Consequently, the length of the head portion has become longer, compared with that of the initial 0 series Shinkansen train-cars, and in addition, the shape has become quite different from those of ordinary train-cars (becoming sharp and streamline, like a duckbill).
しただって、初期の0系に比べ先頭車先端部が長く伸ばされるとともに、通常の電車とは著しく異なった形態（鋭い流線型やカモノハシのような形）を呈する傾向にある。