On Friday, October 31, 2014 2:36:30 PM UTC-4, wrote:

These days they are pretty useless anyway because all of these cars
with collision avoidance systems trip them.

Not really. The newer detectors are *much* smarter, and the adaptive cruise controls and collision avoidance systems don't even register on them.

This is the one I have:
https://www.escortradar.com/PassportMax2/