Japan does have a voluntary ‘I’m old’ plate which does exactly the same thing. It’s fairly common. https://ja.m.wikipedia.org/wiki/高齢運転者標識 https://ja.m.wikiped

Japan does have a voluntary ‘I’m old’ plate which does exactly the same thing. It’s fairly common. https://ja.m.wikipedia.org/wiki/高齢運転者標識 https://ja.m.wikipedia.org/wiki/高齢運転者標識