the 1 that really gets me ;
those drivers who when exiting a Dual-carriageway/motorway,
indicate at the last of the 3 x countdown markers ( or later), then leave the left indicator on until it cancels itself miles down the road,
it's a daily problem where I live = there are 2 RH lanes going onto a busy roundabout,
with another ( 3RD ) LH lane feeding directly into an office / commercial development ( 40 / 50 MPH traffic),
so you are travelling down your correct lane LH when the traffic in the RH Inner Lane slowly moves forward , revealing a stationary car indicating LEFT !, with a 30% chance of then moving LEFT into your path at 5 mph,
it wouldn't be so bad if it didn't happen 3 days each week, !,
Charlie