HC Rule 157 seems to suggest that in the absence of any markings giving clear instructions either is correct:
Quote:
157: When turning at a cross roads where an oncoming vehicle is also turning right, there is a choice of two methods
- turn right side to right side; keep the other vehicle on your right and turn behind it. This is generally the safest method as you have a clear view of any approaching traffic when completing your turn
- left side to left side, turning in front of each other. This can block your view of oncoming vehicles, so take extra care.
Road layout, markings or how the other vehicle is positioned can determine which course should be taken.

Turning right side to right side
xxxTurning left side to left side
At some junctions I prefer the turn behind method for exactly the reasons given in the HC. At others I prefer the turn in front. Either can be done safely, but there's a potential problem in that I might be intending to do one and the driver opposite might be intending to do the other. IMO it would be better if the HC said (in their red block capital stylee

) you must turn behind. Or in front. Because of queues I lean towards the turn in front option, but I'm really not too fussed as long as the ambiguity is removed. I'd like rule 157 to read something like "keep the other vehicle on your left and turn in front of it unless road markings indicate otherwise" and then shell out on the paint necessary to indicate which junctions should always be treated as "turn behind" ones.
Edit required by instant rethink

: I was thinking of a particular light controlled crossroads when I said all that. Obviously the two HC picture examples can realistically be tackled in only one way each.