noun
blue traffic ticket; minor violation ticket
Refers to a blue-colored ticket issued for minor traffic violations in Japan, as opposed to a red ticket (赤切符) for more serious offenses. Often used in contrast with 赤切符.
See also: 赤切符
スピード違反で青切符を切られた。
I got a blue ticket for speeding.
noun
second-class ticket
Obsolete colloquial term for a second-class ticket, especially on trains. No longer in common use.
昔は青切符で二等車に乗れた。
In the old days, you could ride in a second-class car with a blue ticket.