Radar guns

[SuffolkD at aol.com]

Arizona loves these (photo radar) things  PV, Scottsdale ( a decade or so 
now) and now the 101 loop.

Although arguably not photo "RADAR" as they employ sensors in the road 
surface too...........
http://www.scottsdaleaz.gov/photoradar/
http://www.eastvalleytribune.com/index.php?sty=44548

Good one:
http://www.eastvalleytribune.com/index.php?sty=64880
-Scott by BOSTON

"Speed cameras are not used anywhere in the US, to the best of my  
knowledge."