The Expert will be specific knowledgeable people at the Department of Transport, Arrive Alive Communications, the Road Traffic Management Corporation or others who might have the expertise to answer the question.
Hard to say for sure without a diagram or having been there to see the situation. But the rules are:
1. Before turning at an intersection, yield right of way to any traffic approaching from ahead.
2. Motorcycle headlights must be switched on at all times while the motorcycle is being ridden (i.e. day and night).
If the rule in point 2 above was complied with, then the driver of the car probably could not argue that the motorcycle was not visible.
I'm not sure what is meant by "inside channel", but it sounds as if the motorcycle was being driven on the right-hand side of a single lane roadway(?). If this was the case, then I wonder why the motorcycle was not being driven on the left of the roadway.
If the motorcycle's headlights were on, and it was travelling straight through the intersection, it would SEEM that the car driver was at fault for not waiting until the road was clear and safe before turning -- unless there were other factors not mentioned in the description of the situation.
