Like you said, those aren't the most accurate ways to check your speed.
I never passed one of those road side radars that were even close to being accurate.
I also believe GPS will only give a close estimated speed, but not an exact.
So I wouldn't rush into believing your speedometer is off ONLY because your GPS and road side radar signs aren't accurate.
I never passed one of those road side radars that were even close to being accurate.
I also believe GPS will only give a close estimated speed, but not an exact.
So I wouldn't rush into believing your speedometer is off ONLY because your GPS and road side radar signs aren't accurate.