Right, that's the funny thing about roundabouts. They're a marvelous solution to local motor vehicle throughput. That become completely unnecessary if your traffic is anything besides motor vehicles. In fact, for bikes and pedestrians and anyone else who can look at each other eye to eye and even just talk to one another if need be, no signals or signs are necessary at all.

Well yes, but actually bikes wouldn't even need a roundabout with rules like this in the first place.

I'm waiting til it becomes normal for individuals to use old school buses as their commuter vehicles. It's the inevitable destination of the car size war.