This roundabout is unsafe

This roundabout is too small for the amount of traffic that flows through it. Cars going both directions on peak lane do not slow down and think they have right of way even when they do not. Cars coming up from atubbington have not slowed down to 30 to navigate this roundabout. I drive on this roundabout daily and regularly have cars cut out in front of me dangerously close. An accident is going to happen unless something is done to make this junction safer.