TMR put this up on their Facebook asking who has to give way, but that's too easy. A much more complicated question is: what does the law say around indicating?
I've seen people say only blue must indicate, others say both must indicate, and yet others say neither must indicate. Which is correct?
Of course whoever is in front has the right of way but sometimes you have smartarses coming up beside you to overtake. All I'm saying is let them go ahead. It's not worth your life to prove a point.