By the way, JR East stopped the use of trash boxes on train-cars in each of its Shinkansen lines completely as a measure against terrorism for a while, but now, their use has been resumed due to passengers' voices that such a measure inconvenienced them.
ちなみに、JR東日本の各新幹線では、テロ対策のため、車内のゴミ箱を一切利用停止にしていた時期があったが、乗客からの不便という声が高まり、現在は利用を再開している。