What is the purpose of a stop sign?

A stop sign is specifically designed to regulate traffic at intersections and to ensure that vehicles come to a complete stop before proceeding. This is crucial for maintaining safety, as it allows drivers to assess any oncoming traffic or pedestrians and make safer decisions before entering the intersection. The requirement to come to a complete stop helps to prevent accidents, as it ensures that all vehicles have adequately yielded to other traffic or hazards.

The other options do not capture the primary function of a stop sign. While slowing down is generally advisable when approaching intersections, it is not sufficient on its own; drivers must still make a complete stop. Additionally, stop signs do not direct traffic to alternate routes or provide information about speed limits, as those are managed by other road signs and traffic control measures. The stop sign’s singular purpose is to instruct drivers to halt, making it an essential aspect of road safety and traffic control.