I drove big trucks for 10 years. Now I'm back in the Army.
During my time driving, I totaled over 1 million miles with 4 companies.
I have been in the situation were the merging car is slower than me and it looks like I will be there or past when the lanes 'pinch', I speed up and they speed up. PINCH! They flip me off. OOPS
I have been in the situation were the merging car seems to be accelerating well and will be ahead, I back off, maybe even slightly braking, Then they change their mind or panic and brake... PINCH! They flip me off. OOPS
After a while, I just stopped doing anything. I had the ROW, YOU adjust yourself, I don't care. Merge on the gas, merge on the brake, hell, merge under the damn trailer if your car is short enough. I have the ROW when on the freeway.
I really hated running the far right lane because of the entry and exit ramps and did not if there were 3 or more lanes I would drive one lane out from the far right. Pass on the right, pass on the left, I don't care, trucks are allowed in the second lane out from the right when there are 3 or more lanes in urban areas.
Rural areas with few ramps are very different.