elderly driver mark
A clover-shaped sticker that drivers aged 70 and over are encouraged to display on their car to indicate an elderly driver. Similar in concept to the 若葉マーク (new driver mark).
See also: 若葉マーク
My grandfather's car has an elderly driver mark on it.
高齢者マークは、70歳以上のドライバーが表示することが推奨されています。
Drivers aged 70 and over are encouraged to display the elderly driver mark.