Most of the aforementioned, plus
Driving without lights when it's pouring with rain.
Joining a three (or more) lane carriageway from a slip road and darting across traffic straight to the outside lane.
Lorries doing the slower-than-a-slow thing overtake on a 2 lane carriageway (the M2 is notorious for it!).
I could go on..............
In Suffolk a land without 3 lane roads he trucks were #4 on my list.