Hello community! I have the following problem, I drove behind a truck in the direction of a roundabout, the truck driver is instead in the driveway to the roundabout, into the exit (speak to the oncoming traffic) and I instinctively followed him (seen by the construction no signs and thought we were on a “around road” past the roundabout and would switch to the road for in the roundabout. The truck driver then noticed his error when he had a vehicle I also braked and came to stand 2.50m behind him.He put in the reverse gear and set backwards (without seeing me, because I came to stand 2.50m behind the truck.The truck then pushed me back 5m with the underrun protection until he noticed me behind the trailer. As far as the accident happened. Now my question is, is it his fault, because he drove backwards without an instructor / safety post? Or do I have to pay a partial debt. On the one hand, we both went wrong and if I hadn’t followed him, nothing would have happened, on the other hand, of course, he can’t just drive backwards without convincing himself of a free danger area. In my view, it doesn’t matter if both of us were wrong, if both of us would have done the right thing with him. Thanks already in advance for the answers!