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| I just got my first one of these too, only 7 over so no tears. I was surprised at the deduction though, the deduction is to allow for possible errors in their equipment? not possible inaccuracy in the vehicles speedo? That seems pretty harsh, in the UK you get a 10% allowance. The swiss constabulary assume all cars are bang on? | |
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No, it is assumed that your car's speedo reads 2 to 4% fast. Which most of them do, assuming that they are at factory calibration and you are using the "correct" sized tires for your make and model. This, of course, means that if you drive at the indicated speed according to your instruments, you can't ever be caught speeding.
Get a SatNav device that shows your speed and you will find that it is within 1 to 2 km/h even at speeds of over 120 km/h. I know this because, I recently paid a ticket for speeding because I missed the speed limit change and I know how fast I thought I was going at the time.
BTW, the mobile speed traps in the little vans take the photo of everyone who is driving over the limit, even by one km/h. You won't actually get a ticket for it unless you are more than 5 over. They do this to unnerve.