Question The posted speed limit shows: Answers Only a recommended driving speed. The exact speed at which you must travel to avoid a ticket. The maximum safe driving speed under ideal road and weather conditions. The maximum safe driving speed under all road conditions. Explanation A speed limit sign shows the maximum legal driving speed for the stretch of highway where it is posted. Driving safely may require you to travel more slowly than the posted limit. When conditions are less than ideal, drivers should slow down.