Very slippery surface both road and pavement

The roads leading to the school and pavement is extremely dangerous , yesterday it was awful , cars were sliding and you couldn’t walk on the pavement s . This is a highly used highway as the school is situated here . I work in the school and was afraid to walk or drive . You say there are grit bins but I couldn’t see any around . There are also a lot of elderly people in that area . Someone only has to fall and they have grounds to sue . I my self have two artificial hips and would hate to slip . Please can you resolve this problem . Many thanks