GPS has errors, outages. I actually have such a GPS device at work on my desk with a speeding alarm active and it does trigger occasionally, even with the indoo

GPS has errors, outages. I actually have such a GPS device at work on my desk with a speeding alarm active and it does trigger occasionally, even with the indoor GPS repeater on. Tough on speeding restrictions are also stupid. The Italians and Portugese found better ways to deter speeding: red lights with speed sensors at the entrance of low speed zones, localities and cameras with license plate readers that measure your average speed. You either get a red light or a fine for generally speeding as opposed to speeding for five seconds to overtake a slow car.