Radar Detector - SP

I was wondering what a radar detector was when this assignment was presented to me, I clicked the link and immediately knew what it was.

Radar detectors are used by car enthusiasts to detect radar, who uses radar? officers of the law that is... you catching my drift? anyway with these devices you should be able detect if your speed is being monitored and if so it's time to double check that you are going the proper speed and adjust accordingly for the rest of your journey.