
Originally Posted by
Morcs
Really? I thought that the tolerance was only 5Kph in school zones and stuff.
When I was still a lightie (a kid that has yet to hit puberty) my father told me that all car manufacturers have the speedometer overstate your speed by 5km/h. This means that when your speedo says you are doing 55, you are actually doing 50. As much as I wanted to trust my dad, I think the only reaction I would get from an officer is a good lauph.
I've tested this (with those permanant radar guns that say 'your speed is: SLOW DOWN') and when my gauge says Im doing 55 it says Im doing about 50, when My gauge says 50, it says 45, but as my gauge nears 60, it seems to become more accurate. I dont know above 60, the radar gun I was using was in a 50 zone and above 60 they say 'SLOW DOWN'. I tested this in an Isuzu Bighorn and I think it is safe to assume that it differs for every car.
Ive noticed that the radar gun tends to aim quite far back, so be careful that its not the vehicle behind you that is triggering the speed, and you think its yours.
From this I assume that the tolerance level is 5km/h, and your speedo adds another 5km/h. But I dont know. All I know is I have been told in a school zone it is 5km/h, and above 100km/h its 10%.
EDIT: I just realised its an old post, hope your all forgiving.
"Speed has never killed anyone, its suddenly becoming stationary, thats what gets you" - Jeremy Clarkson
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