There's a term I hear a lot in the trucking industry called the "Steering Wheel Holder". This is a driver who has gone through all the basic requirements to own a CDL but knows absolutely nothing about professional etiquette nor does he care to learn. They're the drivers blocking fuel islands, inventing parking spots everywhere (when there's plenty of legal parking options available, it's a different story if you're in an area with limited or worse, no truck parking), speeding/overtaking in a careless or reckless manner, not turning wide around tight bends/intersections, flying around distribution centers at 20-30 mph (you know, places where there's blind spots everywhere and trucks/equipment moving in every direction), distracted by blue-tooth conversations (or worse, watching a damned movie on a tablet while driving, yes I've seen this before), wearing flip-flops out on job sites instead of work boots or even shoes, leaving trash everywhere, you get the picture.
Much of this bad behavior ends up on full display in truckersmp and particularly on the ETS servers. The only thing is it's magnified by a factor of 10. I've spent two years OTR, one of those dedicated, and much of the behavior I see in the multiplayer mod I've seen done by real drivers, from speeding to careless or reckless overtakes (I've had a few moments of other drivers coming dangerously close to hitting me with their trailer while overtaking me).
The question I impose to you is have you seen any similarity in bad behavior between players driving semis and real truck drivers? I sure have. After driving the real deal for a couple years it amazes me how much more of a 'simulation' this mod is than intended. It's just missing the spastic AI traffic and then it would be golden.