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Radar Beats GPS In Court — Or Does It?

TechnologyResource writes "More than two years ago in California, a police officer wrote Shaun Malone a ticket for going 62mph in a 45-mph zone. Malone was ordered to pay a $190 fine, but his parents appealed the decision, saying data from a GPS tracking system they installed in his car to monitor his driving proved he was not speeding. What ensued was the longest court battle over a speeding ticket in Sonoma county history. The case also represented the first time anyone locally had tried to beat a ticket using GPS. The teen's GPS pegged the car at 45 mph in virtually the same location. At issue was the distance from the stoplight — site of the first GPS 'ping' that showed Malone stopped — to the second ping 30 seconds later, when he was going 45 mph. Last week, Commissioner Carla Bonilla ruled the GPS data confirmed the prosecution's contention that Malone had to have exceeded the speed limit and would have to pay the $190 fine. 'This case ensures that other law enforcement agencies throughout the state aren't going to have to fight a case like this where GPS is used to cast doubt on radar,' said Sgt. Ken Savano, who oversees the traffic division. However, Commissioner Bonilla noted the accuracy of the GPS system was not challenged by either side in the dispute, but rather they had different interpretations of the data. Bonilla ruled the GPS data confirmed the prosecution's contention that Malone had to have exceeded the speed limit."

9 of 369 comments (clear)

  1. Standard Calculus by misosoup7 · · Score: 5, Insightful

    If the average speed is 45 mph, and he was stopped at the end (ie speed 0), then at some point he was going above 45. Especially since you can't stop instantaneously. This is like calculus you learn in High School... If the Judge ruled the other way, the future of America would be even in deeper sh*t than it already is.

    1. Re:Standard Calculus by tg123 · · Score: 4, Insightful

      If the average speed is 45 mph, and he was stopped at the end (ie speed 0), then at some point he was going above 45. Especially since you can't stop instantaneously. This is like calculus you learn in High School... If the Judge ruled the other way, the future of America would be even in deeper sh*t than it already is.

      Wondering where you got average speed from ?

      If you had followed the first link http://tech.slashdot.org/story/08/07/18/0318228/GPS-Tracking-Device-Beats-Radar-Gun-in-Court (a bit of effort I know 2 clicks with the mouse) you would have come to the article
      http://hothardware.com/News/Speeding_Radar_Gun_vs_GPS/
      with the quote :-

      ..... Rocky Mountain Tracking device was "very" accurate, to within a couple of meters on location and to within 1 mph on speed. Dr. Heppe also pointed out that the GPS device released instantaneous data, and not data averaged over a distance.

      I personally think this article ( http://www.pressdemocrat.com/article/20091104/ARTICLES/911049901/1334/NEWS?tc=autorefresh) does not have enough info to make any meaningful decisions from.

    2. Re:Standard Calculus by camg188 · · Score: 4, Insightful

      unless mommy and daddy paid a load of cash to make it go faster

      Let's see...
      *His parents installed GPS to report his speed every 30 seconds and download the data to their computer.
      *If he hit 70 mph it would send his parents an email.
      *He was on his way to the Infineon Raceway, which on July 4, 2007 was hosting the Independence Day Bracket Drags, which is an amature/pro drag racing event that included a "High School" category.

      You don't have to be Columbo to figure out that this kid probably had a propensity to burn some rubber at a stoplight.

    3. Re:Standard Calculus by Sabriel · · Score: 4, Insightful

      Tell me something Lt Cook, if someone cheated you out of $200 would you spend $15,000 trying to get it back?

      I'm not Lt Cook. But my answer would be it depends - would my not pursuing a case send a message that you can flout the law if you're rich enough to fight it? That the law only applies to poor people? That's a message I'd not want to send, especially if enough idiots adopted it.

      TLDR version - if I thought it'd save me >$15,000 in the long term? Certainly.

  2. Re:Sounds like california by 91degrees · · Score: 4, Insightful

    Have you considered driving 3mph slower? It seems that they really mean it when they post the speed limits in your area.

  3. Sgt is an idiot by syousef · · Score: 5, Insightful

    'This case ensures that other law enforcement agencies throughout the state aren't going to have to fight a case like this where GPS is used to cast doubt on radar,' said Sgt. Ken Savano,

    Well if the summary is true (and I know it might not be), it actually means the opposite since the GPS data was considered at the trial. That means others may try to present their GPS data in future. It certainly doesn't mean that people can't try that defense. There was no precedent set that the GPS data was less reliable than the radar. It's just that the GPS data could be interpretted to be in agreement with the radar data. Also, this is only applicable to one kind of GPS unit under one very limited set of circumstances.

    In other words Sgt. Ken Savano is either misrepresenting the whole situation or is incompetent when it comes to the prosecution of speeding violations. Either way he's coming across as dim witted and it raises serious doubts for me about his ability to perform his duties as a police officer, since he can't seem to understand the law.

    --
    These posts express my own personal views, not those of my employer
    1. Re:Sgt is an idiot by Anonymous Coward · · Score: 5, Insightful

      I fail to see how this has anything to do with trigonometry.

  4. Re:Sounds like california by shentino · · Score: 4, Insightful

    I think there should be an offense known as "frivolous citation"

    A cop knowingly writing a bogus ticket should get a huge fine of their own.

    Too bad the cities that rely on ticket revenue won't bite.

  5. what's wrong with America by elnyka · · Score: 4, Insightful

    Fuck the parents and fuck the kid. A good parent would have told the kid "tough luck, we pay the ticket and you pay us back from your allowance". But noooooooooooo, better to make a fucking mountain out of a grain of sand at taxpayers' expense to prove a point that is questionable to anyone with a basic understanding of calculus and physics.