What is the meaning of a stop sign?

A stop sign indicates that vehicles must come to a complete stop at the intersection where the sign is posted. This requirement is crucial for ensuring the safety of both drivers and pedestrians. Upon stopping, drivers are then required to give way to any other vehicles or pedestrians that may have the right of way, ensuring a smooth flow of traffic and preventing collisions.

The other choices misinterpret the purpose of a stop sign. Pedestrians are not required to stop before crossing; rather, they have specific signals and signs that govern their right of way. The notion that vehicles only stop if another vehicle approaches undermines the fundamental traffic control that stop signs provide, which necessitates a complete stop regardless of other vehicles. Lastly, the idea that only trucks must stop is incorrect, as all motor vehicles must comply with the stop sign requirement.