noun
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
祖父の車には高齢者マークが貼ってある。
My grandfather's car has an elderly driver mark on it.
Drivers aged 70 and over are encouraged to display the elderly driver mark.