I quite like the way it works round B'ham but it scares me to think of what would happen if someone broke down.
The best thing I've seen for easing conjestion has been an experiment on the A14 (a major two-lane East-West route that runs from the end of the M6 across to the East coast) where trucks are banned from the over-taking lane during the main part of the day. If this could be made a general policy we could cut the incidence of 'truck doing 56 mph overtaking truck doing 55.5 mph with LONG tail back of frustrated car drivers behind'.