That being said, sharrows on a busy 40 mph road (or higher) are likely absurd.
A point I should have included in the original posting:
- assume the discussion is only about sharrows placed properly and appropriately. Eg, not on roads > 35 mph as per the guidelines. (I would say in general not > 30 mph).
I think we can agree that bad implementations of sharrows (wrong location; wrong roads; too close to parked cars) don't help and may do more harm than good. I would like to discuss the merits of good implementations.
Thanks for the feedback so far. Hoping for more.