Examples I have thought of include, especially for motorways:-
Indicate well in advance of changing lane or you don't get in
If you change lane once, don't do it again for a reasonable period as it is greedy
If you are exiting a motorway, do it at least 1/2 mile before
If you have a big car, you should wait longer until people let you in their lane
People who drive slowly (on any road) should choose a route that is not a primary route (especially in rush hour)
If you're not in a rush you should be generous and let other road users pulling out of side streets in
If anyone would like to add to this, please feel free!
Tags: