At intersections controlled by signs or signals you must obey the signs or signals. At intersections not controlled by signs or signals, you should yield to the vehicle already at the intersection. If two vehicles approach the intersection at the same time then yield to the vehicle on your right.

Who has the right of way at an intersection?

As a general rule, you should yield to cars that are already at the intersection. Whoever arrives at the intersection first gets to go first. And similar to stop sign etiquette, you should yield to the car on your right when in doubt.

How do 4-way intersections work?

When two vehicles arrive at a 4-way stop at the same time side-by-side, the vehicle furthest to the right has the right of way. If three vehicles arrive at the same time, the car furthest left should continue to yield until both of the other cars to the right of them have passed.