I believe that improper training and testing is the main cause.
The simplest example is entering and exiting a roundabout (Circle). Most people get this horribly wrong.
- You are not required to stop
- Traffic approaching from the right has right of way.
Signalling
To Turn Left (taking the first exit)
-Signal left and approach in the left-hand lane
-Keep to the left on the roundabout and continue signaling left to leave.
To go straight on (taking the second exit)
Select the appropriate lane on approach to and on the roundabout. If no markings or signs indicating otherwise keep to the left lane. Stay in this lane until you need to alter course to exit the roundabout. Signal left after you have passed the exit before the one you want.
To Turn Right (taking the last exit or third, fourth, etc.. exit )
Signal right and approach in the right-hand lane. Keep to the right on the roundabout until you need to change lanes to exit the roundabout. Signal left after you have passed the exit before the one you want.





