In reply to Rog Wilko:
Bicyle approaching Walker
Motor Vehicle approaching Bicycle
Slow Down to near their speed
once this is done every thing else drops into place.
Overtaking car no longer takes a wide high speed sweep into on-coming traffic.
It takes little effort for the passer to Slow, Pass, then Resume Speed.
Respect the person you are approaching, it could be you 50% of the time.