Rather than have dangerous Smart Motorways, why don’t National Highways reduce congestion by simply educating people and enforcing the rule of driving on the left?

It is SO frustrating to see drivers who constantly hog the middle and outer lanes. This would mean freeing up more space on the motorway and reducing congestion. I do appreciate that lane one is often busy with slow movers, but there is often still plenty of space between them for lane two and three.