A problem that has come up a few times occurs when a vehicle turning right doesn't see the cyclist bombing along with an equally unobservant cyclist. The cyclist will lose, every time. The green lane only serves to give some of them an unhealthy sense of stupidness. The lanes should be yellow so everyone takes extra caution at a potentially dangerous location.

On a related note; we have a few councils around who are pushing the bicycle lanes with little to show they are needed. I'm out and about every day but rarely see any cyclists in the full vehicle sized lanes they are granted. They also don't need to be on a major artery where traffic is already over crowded. Pushing them a block or two over will keep them safer. Total access isn't a requirement simply because they whine about it.

If safety was the true reason then cyclists would not pass vehicles but rather travel in line like everyone else and take their turn in sequence. I see it happening but often enough.