While it's impossible to estimate the warning time due to so many outside variables - expect it to do what you bought it for: give you enough time to slow down and save yourself from receiving a speeding ticket.

Speed signs – or speed reading boxes – are radar-based. Radar detectors are not radar jammers. Jamming radar is a federal offense and is prohibited by federal law nationwide.

No, we do not. The sale and use of radar jammers has been banned by the Federal Communications Commission (FCC) since 1997. The fines for each violation can reach up to $11,000.