"camera:type"=>"fixed","surveillance"=>"traffic","surveillance:type"=>"camera"
"camera:type"=>"fixed","surveillance"=>"traffic","surveillance:type"=>"camera"
"camera:type"=>"fixed","surveillance"=>"traffic","surveillance:type"=>"camera"
"camera:type"=>"fixed","surveillance"=>"traffic","surveillance:type"=>"camera"
"camera:type"=>"fixed","surveillance"=>"traffic","surveillance:type"=>"camera"
"camera:type"=>"fixed","surveillance"=>"traffic","surveillance:type"=>"camera"