un-manned speedtraps on Dallas North Tollway??

I have been up the North Dallas Tollway a number of times the past couple of weeks and my radar informs me of a "SpeedTrap" going north on the tollway around Eldorado and Panther Creek parkways... also right after it flashes "speedtrap", it will show a K-band signal.

Just wondering if anybody has seen this on their radars or might know anything about this..
Could there possibly be an unmanned speedtrap there?? hummm wondering..

That is the only place my escort has flashed the "speedtrap" indicator..