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?
I think there are two types of merges, this one is 2 into 1, not left lane ending
This is correct.
There’s a video on this page that shows only the blue car signaling.