At the beginning of the introduction of the electronic type, indication of the taximeter had only 'vacant car' and 'Kaiso (Not in service);' however, because 'Not in service' was ambiguous, taxi operators are obligated to set up an indicator which has signs of 'Geisha' and 'Reserved,' and in recent years 'In service,' 'Pay,' and 'Reserved by radio' as well.
初めて設置された頃は「空車」と「回送」しか表示しない物しかなかったが、「回送」では分かりにくいので「迎車」や「予約車」、更に最近では「賃走」、「支払」、「無線予約」などが表示できる物の搭載が義務付けられるようになってきた。