You are the driver of the car. Define in what order the cars will go through the intersection?
the blue car approaching the intersection from the left, 2. the oncoming red car, 3. the green car approaching the intersection from the right, 4. your car.
your car at the same time as the red car, 2. blue car coming from the left at the same time as the green car coming from the right.
blue car coming from the left at the same time as the green car coming from the right. 2. your car at the same time as the red car.