As a HGV driver, I see so many annoying and dangerous habits of fellow drivers, particularly on motorways.
A couple of examples. Vehicles that don't know how to join a motorway from an adjoining slip lane. They "drift" onto the motorway at about 45mph expecting others to slow down to allow them on. Forcing other vehicles to take evasive action to allow them to
join.
Secondly, drivers who "amble" along the motorway at about 50mph, thinking they're uber safe whilst having heavy vehicles come out around them in the middle lane, having a domino effect of causing bottlenecks behind them. " Never had an accident in my life " Just caused dozens in my rear view mirror – if I bothered to look.