Acceleration strips – can my backman pass me?!

Good evening together, the following situation happened to me about 2 hours ago: I drove up on the highway and noticed already on the driveway another car behind me which was very close. Since my old Benz (300D, year ’89) is no acceleration miracle, it takes a little longer now than with a modern car until I have a speed on the acceleration track to drive on the BAB. For this reason – unlike many others – I always use the acceleration strip I wanted to do the same thing in the evening, but the car behind me moved just before the baffling lane was over – and I wanted to drive up to the BAB to the left on the right lane and pulled past me, but not with a particularly big acceleration. The problem with my “home ascent” is that the acceleration strip at the end does not pass into the stand strip in the same width but strongly I had to slow down strongly so as not to walk the guardrail, as it was exactly at my height at this time. Now my question: I know that as a passenger car I must not hinder the flowing traffic. Now the car behind me has already gone to the road in front of me, therefore it was on a regular lane of the highway. So I can do it from this point of time. t with my attempt to switch to the right track no longer hinder, since I am the one who wants to drive up, because he has already been in the flowing traffic, right? Would be really great if someone could tell me about this situation which can be really dangerous, but certainly has happened to everyone at some point (unless you got a Porsche at the 18th ).