All standard radar guns read traffic going away and approaching at the same time, but the gun will select the fastest speeds, regardless of the
direction.
If you want to select traffic from one direction only and ignore traffic from the other, your best is a directional model from Decatur, which allows you to select which direction you want to monitor. For an in car model, select the directional antennae option, Decatur SpeedTrak Radar System - Law Enforcement / Police In Car Moving Radar For a handheld, try the Decatur Genesis Handheld Directional PoliceRadar Gun GHD w/ K-Band Directional Antenna & Cord w/ Cigarette Lighter Adapter. _________________ Thanks for posting with us
Joanie K - Your personal optics expert