Some of the 'complexity' may be localized. The shopping district I referred to in my earlier post I only ride once or twice a year when I am on vacation at the beach. But, due to the fact that there is a significant young, east-European immigrant summertime work force who travel almost entirely by bicycle, the locals and vacationers are aware to some degree of cyclists more than they might be at some other locality. Also I think the speed limit is low.
However, when riding one of these restricted lanes, one must still be vigilant for no-look merges from the left through lane especially if traffic is slow, slowing or stopped at a traffic signal and you are overtaking on the right.