Obey stop and give way signs and road markings and then follow the give way rules.
This page describes:
As well as the stop sign, the word STOP and a single yellow line will be painted on the road.
At a stop sign you must come to a complete stop. Stay stopped until you have given way to all other vehicles.
If another vehicle is also stopped at a stop sign, then follow the give way rules in order.
As well as the give way sign, a triangle give way marking and a white line will be painted on the road.
At a give way sign, you must slow down and be ready to stop. Give way to all other vehicles except those that have stopped at a stop sign.
If you and another vehicle are coming towards each other and you are both at give way signs, then follow the give way rules.