RADAR GUNS CAN BE FOILED OCCASIONALLY. WHAT TO DO: POSITION YOUR CAR CLOSE TO OTHER CARS WHENEVER POSSIBLE. POLICE OFFICERS GENERALLY CANNOT MATCH YOU WITH THE SPEED INDICATED ON THEIR GUNS UNLESS THEY HAVE AN UNOBSTRUCTED VIEW OF YOUR CAR. IN MOST STATES, MOTORISTS ALSO CAN MAKE USE OF RADAR DETECTORS, DEVICES DESIGNED TO ALERT DRIVERS TO RADAR EARLY ENOUGH TO SLOW DOWN BEFORE POLICE OFFICERS CAN GET A GOOD READING. IF YOU DO A LOT OF DRIVING, A DETECTOR IS A SENSIBLE INVESTMENT IF IT IS LEGAL IN YOUR AREA.