Some do some dont. I think some or most have a CB in the car but most dont even turn it on. If they do have it on, you have to be very close to them as they have poor antennas and usally the squelch turned up!
The Posts still monitor and as far as I know so do the patrol cars, as stated earlier the trooper may have it turned down or the squelch up. I have copied traffic between motorist and troopers recently. Hoser