I think this is also a good example of why it is so dangerous to have idiots refusing to merge properly, forcing traffic on the motorway to brake. You might be able to brake and avoid a collision but the person approaching from your rear might not. And then they hit you. Do you think a major re-design of merge lanes is in order? When I am in the States this is much less of a problem, they seem to have a better approach including lower speeds.
There's too many cars on the roads already. This country used to be so much more greener and quiter.