What must you do at a stop sign?

At a stop sign, it is essential to come to a complete stop. This requirement ensures that you have a clear view of the road and any potential hazards before proceeding. Stopping fully allows drivers to assess any oncoming traffic, pedestrians, or other obstacles that could pose a danger if they advance without taking the necessary precautions.

Additionally, this practice fosters safer driving conditions for everyone on the road, as it promotes the careful observation of the surrounding area. By stopping completely, you are also adhering to traffic laws that are specifically designed to prevent accidents at intersections.

The other options do not align with the proper protocol at a stop sign. Proceeding without stopping disregards the law entirely, while simply slowing down does not provide adequate time to evaluate the road's safety. Stopping only if there are other vehicles contradicts the universal requirement that applies regardless of the presence of other vehicles; safety must always come first.