If two cars arrive at a 4-way stop intersection simultaneously, which car has the right-of-way?

The correct answer emphasizes the right-of-way rule at a 4-way stop intersection, which states that when two vehicles arrive at the same time, the vehicle on the right has the right-of-way. This rule helps prevent confusion and maintain a smooth flow of traffic.

The logic behind this rule is rooted in promoting safety and predictability on the roads. When drivers know they should yield to the vehicle on their right, it reduces the likelihood of accidents and improves the overall effectiveness of traffic rules at intersections.

In contrast, the other options do not correspond to the established traffic regulations. The car on the left does not have the right-of-way; instead, it must yield to the car on the right. A car making a turn does not inherently have priority over other vehicles unless specific conditions are met (such as a dedicated turn signal and position). Furthermore, the size of the vehicle does not determine right-of-way; all vehicles must adhere to the same traffic laws regardless of their dimensions.