The Safety Vests of Thumbs-Up Safety which meets EN20471 provide increased visibility for job sites and vehicle traffic hazard locations. Enhanced visibility provides an additional margin of safety during inclement weather conditions, public safety emergencies, traffic hazards and construction sites.Examples of people who would use EN 20471 safety vests may include road construction crews, utility workers, survey crews. airport ground crews, law enforcement, railway workers, school crossing guards and toll gate personnel among others.