If the locals that do not know how to look for the open space but instead aim for my door handles are constantly 'pushing' me over to the middle lane that is where I will run. I will generally be a slower moving vehicle that should be on the right but I just give up. I am still going to drive my own speed regardless of traffic. I am generally OK letting people drive into the weeds if they cannot merge but DW has a panic attack every time.
And yes I have had one try to merge between the truck and trailer. Their insurance paid dearly. Very clear on the police report that the vehicle entering traffic must yield.