Ontario MTO Truck Knowledge Practice Test

When at a four-way stop, two vehicles come to a stop at the same time. Which vehicle must yield?

1. The vehicle to the front

2. The vehicle behind

3. The vehicle to the left

4. The vehicle to the right

The correct answer is: The vehicle to the left

In a scenario where two vehicles arrive simultaneously at a four-way stop, the rules of right-of-way dictate that the vehicle on the left must yield to the vehicle on the right. This means that if Vehicle A is on the right side of Vehicle B, Vehicle A has the priority to proceed, while Vehicle B must yield. The rationale behind this rule is to create a clear and consistent method for determining who has the right to go first in potentially confusing situations where both vehicles have stopped at the same time. This helps to prevent accidents and ensure a smooth traffic flow at intersections. In essence, when drivers understand that they should yield to the vehicle on their right, it reduces uncertainty and improves safety. The other options are not applicable in this context because they do not follow the established rules of right-of-way at a four-way stop. The vehicle in the front and the one behind are not factors when assessing which vehicle yields in cases of simultaneous arrival, as the primary consideration is the position of the vehicles relative to one another.