Hidden vehicles using signs or curves in the road to conceal their presence. Often the radar will clock your vehicle 5 to 10 miles more then your speedometer will read. These are good old boys trying to protect the life style and children that often frequent local business along this strip but the limits are well posted they just change every 200 feet as your interring making it difficult to slow from highway speeds with moderation. Also as you are leaving town the residential and business fades away but the speed limit will remain low. Be aware.