Had this happen both East and Westbound on Highway 87 when going thru during vacation in 2019.
Didn’t get pulled over, I obeyed the speed limit signs. Had a police officer follow me from one side of the town to the other, he only stopped because he got too close and my camera system flashed a warning at him.
Not sure why this happened two times. Otherwise, I did notice school zones lights, in the middle of summer when school is out in Texas that on Eastbound that was turned on and the Westbound turned off.
I’m pretty sure I would have been given a ticket, but my camera system (with a sticker saying this “Vehicle is monitored at all times.” on it deterred the speed trap.