If two drivers arrive at the same time to an open intersection:
The driver on the right has the right-of-way.
The driver on the left has the right-of-way.
One driver may continue driving without stopping.
One driver should honk to indicate that they are giving up the right-of-way.
If you arrive to an open intersection at the same time as a vehicle to your right, you should yield the right-of-way to that vehicle. You may then proceed when it is safe to do so.