I know this is an old thread but I wanted to give my opinion on this.
It is not illegal to ride a bike on the right of traffic. I have a hill that I have to get down on my way to work. The hill is for two lanes of traffic one going straight on and left and the other lane to turn right, I need the lane to turn right. So i use the middle of the lanes to navigate down the left and side of the right lane and the right hand side of the left lane. The amount of cars that have pulled out in front of me from the left lane trying to tun right is into the hundreds now. Not one of them look for a cyclist coming down, even though i use that road at the same time every day. I either have to stop and wait for the car to complete its inconsiderate move or as i sometimes do I squeeze myself through the gap and give the driver a very dirty look.
I also drive and am very aware and considerate to both cyclists and drivers, When turning left if there is a cyclist there I will slow down and let them pass before turning, once while I was letting a cyclist get past me so i could turn into the supermarket carpark another driver behind me decided that i was robbing him of 30 seconds of his life and decided to overtake me and then turn left in front of me into the carpark almost hitting the cyclist. I had a go at the driver who said that the cyclist should have stopped for us to turn in.
Can you imagine how long the commute by bike would be if we gave way to every car on the road who wanted to turn in front of us.
So annoyed.