Quote:
Originally Posted by wpoll
I was kidding... 
Interesting that your law would side with the GPS though. I never want to test that here - and anway, it seems like prevention might be better than a cure in this case!  |
What caused me to start putting them in for this was my F250 superduty diesel truck. For some reason it cant be clocked accurately with a radar gun.
They get speeds showing of 70 to 80 mph when Im going 45 mph. The logging feature proves it by showing a long log of readings covering the times in question. They even did some test the following week out of curiosity and sure enough the readings were 20mph or more faster than actual speed. Heck they clocked it doing 25 mph once while parked. Weird. We never have figured out what causes it.