Red and white octagonal signs are perceived as “Stop” signs universally. The benefit of octagonal shaped signs is that you can convey any message through these signs and people will first stop in their tracks to pay attention and read the sign carefully. A simple shape can help you effectively convey a vital message like “Do Not Park in a Private Driveway”. Unique eight-sided shape breaks monotony and gets more attention than regular rectangular signs. Even if drivers face the sign from the back, the shape of the sign would intrigue them.