Sign post notice

The stop sign is one of the most common signs in use today. Its shape is octagonal with red letters on a white background, but it can also be yellow with black letters for increased visibility. There are many different kinds of stop signs depending on where they?re placed and what their purpose is. They may have additional symbols or words written on them as well, such as ?Yield,? ?No Parking,? or ?School Zone.? In some places, you?ll see flashing lights instead of just text printed on the sign itself; these flash when another driver has been detected by radar nearby so that you know it?s time to hit your brakes! Some states even require all new school buses to be equipped with special sensors that trigger an automatic stop sign whenever they pass by one!