generally all intersections without stoplight is considered a stop-look-go situation....if you have driven in subic you know what I mean. it is not an issue on "who is in the main road has the right of way of priority".

the first one to arrive (should stop) at the intersection and also have the right to be the first one to go.

so in your case, it is already the L300's right of way. the speeding car was stupid (SIC) for NOT STOPPING on that intersection.

now if it is a T-section, the main road serves the right to go. those coming from the feeder road should stop before turning (left or right) as a rule.