Which statement regarding right-of-way at intersections is NOT true?

The statement that drivers already in a traffic circle must yield to entering drivers is not accurate. In a traffic circle, or roundabout, vehicles that are already circulating have the right-of-way. This design is intended to keep traffic flowing and reduce the likelihood of collisions. Drivers entering the roundabout must yield to those already in the circle.

As for the other options, pedestrians do indeed have the right-of-way in most situations, particularly at crosswalks, which establishes their priority in traffic interactions. Right-turning vehicles must yield to left-turning vehicles because the left-turning vehicle is making a maneuver that crosses the path of the right-turning vehicle. Vehicles on a main road typically have the right-of-way over those on side roads, as it is crucial for maintaining traffic flow and safety at intersections.