Originally Posted by
noisebeam
I stay in the thru lane and use the RTOL as a bail out option.
I do almost the opposite, and drift to the left side of the RTOL lane, then at an opportunity near the split, make the move to the thru lane. Not saying this is best or thar it's right in any sense, but my logic is that the turning traffic is already slowing, and IME tends to be more patient because they know I'll be out of their hair very soon.
There's no question of law involved, and everybody has to use their own discretion and go with what works best for them.