I'm willing to be open minded about the concept that bike lanes could work in some places ... but I'm (1) curious about the execution and (2) also afraid that those places might be used as examples by planners in other places where they would clearly be dangerous - as you're informally doing.

So enlighten me on the two most common issues.

(1) Proceeding straight through an intersection. How are the bike lane separators designed so that cyclists are clearly visible to vehicles that are turning right from the cyclists' left? How do vehicles intending to turn right from the cross street, onto the street where the cyclist is, pull up so that they can see the traffic running parallel to the bike lane, without interfering with the cyclists' ability to go straight?

(2) Turning left. How, when and where does the cyclist exit the separator and weave their way over to the left traffic lane?