The vehicle making the left turn must wait until it is safe for the driver to make the turn. Oncoming traffic, even that which is signalling a turn, precludes making the turn in safety. The right turning vehicle is under no such onus. This is in keeping with the section of the Driver's Handbook, that was quoted by Marcos.
I agree I wasn't pointing out which vehicle has the right of way, merely pointing out the difference between an intersecting highway and one which is the same highway, (as defined by the HTA). I have stated previously, LONG ago in the thread that the left turner must wait until it is "safe to complete his turn"