Preventive announcements

In all companies we know we can see some big announcements in bright colors...well this announcements are there to order something like a way of dressing for preventing accidents.

This announcement shown here represents the need to wear a dressing-gown, glasses and rubber boots, for the protection of the workers.

I show this announcement to a friend, and what he told me was that the announcement was very clear of what is needed to wear and it is also very showy so all can notice it.