No need to worry my friend.These radars are super intelligent.These are two in one.On one side they took the picture and on the other side they calculate the speed at which the car is moving.Moreover these cameras did not take picture if your car is above speed limit upto 10 kilometers.e.g if road speed limit is 80 and you are driving at 81 or 85 they won't take picture but if you are at 90 or 95 then they will flash only.I myself experience this thing by driving above speed limit at 81 and crosses infront of the radar and it didnt flashes because there is always a margin slightly between speed limits because we are human not machines we cannot keep our car to a constant speed of 80.That is why it functions like this.