People could do with actually following the lanes on roundabouts as well...
Followed a brand new transhit tourneo up Tollgate hill yesterday... 70mph dual carriage way. Eventually undertook, along with several other cars as he was doing a mere 55mph in the outside lane. When we get to the traffic lights, rather than joining the queue, he goes straight to the front of the left turn only lane, clearly expecting to pass the six cars that he had obstructed up the hill. Suffice to say, no one allowed him to change lanes and he was left the choice of braking/crashing into the central reservation of the lane he was in/losing the osf quarter in the side of my battered Omega... He braked. Hard.
On finally joining the M23, with zero rearward visibility due to the sun's angle, he was straight into the outside lane and settled at 90mph. Opposing oppstarding tunc
Point is, no matter how people drive, there will always be someone worse. Hence the nanny in from the powers that be, even though it would be far more efficient to let these mindless tossers kill themselves in short order...