One small adjustment that I have seen in England that could be used over here are road markings that don't favour one lane over the other. This is for permanent areas where a lane ends, and not for construction.
After a set of lights, roundabout, etc. in England, you will often see a series of arrows blending two lanes into one, rather than a dashed line that implies that lane A is uninterrupted, and lane B ends. I honestly feel that contributes to the feeling of entitlement of those in lane A, because lane B ending is lane B's problem.
For example:
Streetview:
https://www.google.ca/maps/@52.65142...7i13312!8i6656
And satellite:
https://www.google.ca/maps/@52.65128.../data=!3m1!1e3
Just through road markings alone, the UK version says to me : "blend, merge, be one!" And the Canadian version says : "Your lane ends - not my problem." While that may not be true under the law, there is definitely a sense of entitlement over lanes here when one ends, or a merge is required.