Question What does this road sign mean? Answers Slow down and prepare to stop if cars are approaching you. Come to a full stop and go when it is safe to do so. Proceed carefully through the intersection, not always stopping. Stop only for traffic on an intersecting road. Explanation A stop sign means that you must come to a full stop and yield the right-of-way to vehicles and pedestrians in or heading toward the intersection. Go again when it is safe.