Take one give one is the rule. Truckers blocking lanes is maddening. Nothing in front of them, many times but riding side by side or one straddling the lanes.
Happened yesterday. Sign said congestion ahead. he jumps out in front of me, with no signal and I had to slam on the brakes. he rode side beside another semi.
One or two cars ahead of semi in right lane. Other lane clear as far a I could see. After a mile or two no traffic to speak of and he finally got over. I would have liked him to stop and teach him some new words.