What does a stop sign inform you about?

A stop sign is a crucial traffic control device that instructs drivers on the necessary action they must take when approaching an intersection. It clearly conveys the command to come to a complete stop before proceeding. This regulation ensures safety, allowing drivers to look for oncoming traffic or pedestrians before making decisions on how to proceed. Compliance with stop signs is fundamental in preventing accidents and maintaining order on the roads.

The other options do not align with the function of a stop sign. A stop sign does not provide instructions regarding parking, speeding, or changing lanes, as its primary purpose is solely focused on the requirement to stop and assess the situation at intersections.