For those who are in the area (Chandler, AZ).
The direction and speed limits of the cameras that have been installed in Chandler Arizona could be put to very good use if you have it. Sending a message to Navalert so that it could be programmed into the units would be a big help. Use the contact link on their site www.Navalert.com
Note: I am not a representative of Navalert, just a citizen who uses one and loves it.