Maine Permit Test 8 Question What does this road sign mean? Answers Slow down and prepare to stop. Come to a full stop, then proceed if it is safe to do so. Proceed carefully through the intersection, but you may not always need to stop. Stop only for traffic on an intersecting road. Explanation When arriving to a stop sign, you must always come to a complete stop and proceed only when it is safe to do so. Maine Permit Test