Picture: lustymonk / Flickr

Many of us in a rush to work in the morning have seen those dreaded sirens appear behind us, only to immediately get pulled over and issued a speeding ticket. Excuses like “I was late for work”, or “I was going the same speed as everyone else”, or “Do you know who I am?”, don’t usually stir the sympathies of stoic motorway police. In fact, sometimes the only way to contest a pricy speeding ticket is to argue your case in court. Many people report success on this front, because radar guns are notoriously unreliable, and often the motorway police officer in question won’t even have time to show up to the trial; while others are unsuccessful and only add more expenses to their original speeding fine. A new case in the US might now give drivers a sure fire way to contest speeding tickets in the future, and win.

An 18 year old man managed to get a speeding ticket overturned in court on the basis of data from his GPS and testimony from experts. Radar guns are known to be unreliable, and according to the driver’s GPS, the radar gun clocked him going 17 miles per hour faster than he actually was. Meanwhile, the GPS expert present in the court case testified that the sat nav in question was accurate to within a few metres and one mile per hour in terms of speed. However, it should be noted that the defendant in question was using no ordinary GPS device, and instead had a RMT Rover model GPS installed in his car; which is used by professional lorry drivers. Still, this is a very interesting precedent and it could result in the sale of many more professional GPS systems, as well as a higher number of overturned speeding tickets.

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  1. mokomull Said,

    That wasn’t a GPS navigation unit, it was a GPS tracking unit that his mother had put into the car. A GPS navigatior doesn’t store your position/time data; it just shows the current location and forgets it as soon as you move. Saying “I remember my GPS said I was going 65mph” will go over just as well as “my speedometer said 65″ unless you actually have the position data to prove it.

    Also, nice picture taken somewhere in the Puget Sound area, along I-5 :-)

  2. Fadi Said,

    i’m going to buy one tomorrow

  3. siggi Said,

    but in some GPS units you can see your top speed for the whole trip and if that hasn’t gone over the limit it must be guaranteed that you were under the limit when the police stopped you…

    correct?

  4. Lew Said,

    @mokomull - The Garmin Zumo 550 has something called tracks, every second it records long/lat, speed and altitude. These track marks are saved until you delete them and you can import the tracks onto your computer. I use this on my motorcycle to analyze my corning speeds. I believe many if not all of the Garmin units have the track feature.

    I did get pulled over while using it once, the cop said I was going 72 mph, the Garmin reported the exact same numbers. I didn’t use that data in court :-).

  5. akoumjian Said,

    Navigation units almost always have a tracking feature built in. Any unit you can stick an SD card into normally allows you to track your incremental location along with a timestamp. A GPS tracking unit is nothing but a GPS navigation unit with no LCD or interactive features.

  6. Mard Said,

    Of course it only works if you are NOT speeding. I’ve been driving for 40 years and getting speeding tickets when I’m not speeding has not shown itself to be a problem!

  7. Wasaki Said,

    According to the position on the GPS in the picture, i live about 20 min north.

  8. Aaron Said,

    Actually most GPS’s (every one I’ve ever seen) save your trip time, max speed, time spent stopped, etc. It is stored on a trip by trip basis.

  9. Robert Said,

    @mokomull: I’d avoid GPS navigators without the trip recording abilty - even if it’s not built in it should be easy enough to upgrade and/or add a plugin i.e. http://www.webazar.org/tomtom/tripmaster.php?lang=uk for TomTom navigators.

    A must if you:
    a) take random routes and like to get ‘lost’ (open trip data in Google Earth to check where you were)
    b) wanna check what your min/max/avg speed/altitude were
    c) got a photo and you can’t remember where you took it (i.e. take date/time stamp from photo above and compare it with GPS tracking data and you’ll know exactly where it was taken, not ’somewhere in the Puget Sound area’)

  10. paresh Said,

    nice , thanks for sharing.

  11. God Said,

    OR!…..
    Dont speed!

    problem solved!

  12. Dan Said,

    Looking at it, that’s Exit 182, just over the Snohomish-King border. I used to live there when I went to UW!

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