Having just read this thread it has reminded me to get a camera installed in the tractor. It is a fact now the roads are not safe for all users. Personally I think all must accept some blame, esp the lorry driver who should of hung back enough to let you back in if needed. There seems to be a lot more people on the roads who are ignorant and no patience. For me the only way to protect yourself is cameras ( having gone through insurance claim which was there fault but It can’t be proved because they lied ) for evidence and give yourself time. No matter the law would you really want to lame or worse someone even if it was there fault. The law is old and not clear but you would be left to defend yourself as to how an accident occurred.