Originally Posted by
Eric F
I always verify with my own eyes before moving, but if the display is showing a stream of cars, I know that I have to wait. I've had it show me things that weren't cars, but it's never not identified a car.
This reminds me of the "False Negative" aspect: that is, the radar NOT showing a car when there is one. Several times I've noticed a car behind me keeping pace with my speed, and the radar does not show it. This is noted in the Garmin literature, and is not a defect. The radar only works when objects have a closing speed difference. That said, I've never had a false positive - failure to detect a
moving car.
Like Eric sez, always confirm with the eyes.