I only saw 2 Tx Dps officers shooting I/O 34.7 i got over a mile warning over 2 small hills. The other incident was a Tx dps running K band which i heard was very rare and the range was over 2 miles from C/O on highway 84. I ran FILTER half way there and noticed a extreme case of falses from Cobra's some as far as a mile. FILTER 2 was very quiet on the rest of the way back with a few laser cruise control falses. The Interstates here are heavily flooded with COBRAS. I only saw a few top 5 detectors and the rest Cobra. I recommend FILTER 2 on every Interstate. You might get away with FILTER or FILTER 1 on the highways. The greatest thing i saw was 4 old ladys blew by me going over 90 in a new caddy CTS with a cobra rd and Dps had them pulled over about 2 miles down the Highway LOL. They were my rabbit for a while and i gave up since i didn't see a trooper in an hour or so.