On the yamagata shinkansen line where through operation with the regular railway line has been introduced , accidents at railway-crossings between tsubasa trains and cars have occurred frequently . また在来線と直通運転する山形新幹線では、つばさ (列車)号と自動車との踏切事故がしばしば発生している。
Tsubasa (trains )' : 400 series shinkansen train-cars and e3 series 1000 - 1999 shinkansen train-cars are used , and these train-cars are basically operated connected with e4 series ' max yamabiko ' shinkansen train-cars in the southern section of fukushima station (some of them are operated independently in the same section ). 「つばさ (列車)」:新幹線400系電車、E3系1000番台を使用し、福島以南は基本的にE4系「MAXやまびこ」と併結(一部は単独運転する)。