high-visibility

US /ˌhaɪ ˈvɪz.ə.bɪl.ə.t̬i/
UK /ˌhaɪ ˈvɪz.ə.bɪl.ə.t̬i/
"high-visibility" picture
1.

easily seen, especially by other road users

:
Construction workers often wear high-visibility vests.
Cyclists should use high-visibility clothing at night.