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Using Cell Phones to Track Traffic

msh210 writes "The AP has reported (with additional information from KMOX-AM) that the Missouri Dept. of Transportation will be teaming up with a private company to track in-use cell phones on Missouri highways and state roads in an effort to monitor traffic flow. Individual information will not be stored, they say -- only the aggregate will be studied, using "sophisticated" math. (See also findlaw.com's commentary on privacy concerns. "

19 of 246 comments (clear)

  1. Better idea by Anonymous Coward · · Score: 5, Funny

    Using cell phones to track dupes.

  2. what? by conJunk · · Score: 4, Insightful

    is it just me, or does this sound like a complete waste of money? privacy concerns aside (i'm not convinced there are any), what will this accomplish that video cameras don't already do?

    so we'll use mobile phone signals to monitor traffic? seems heaps less efficient that actually looking at real traffic volume...

    1. Re:what? by LordNimon · · Score: 3, Informative

      Video cameras can't count cars. A device which detects cell phones can.

      --
      And the men who hold high places must be the ones who start
      To mold a new reality... closer to the heart
    2. Re:what? by GoodOmens · · Score: 4, Informative

      This has been going on for the past 6 months in Maryland.

      http://www.mddailyrecord.com/pub/5_398_friday/busi nessnews/172883-1.html

      MMTIS uses the movement between towers, without collecting personal information, and uses that data to determine speed and movement in specific areas.

    3. Re:what? by honeypotslash · · Score: 3, Insightful

      They must be trying to get people to stop using cell phones while driving by making them paranoid that they are being tracked.

    4. Re:what? by Surt · · Score: 3, Insightful

      I think you got that backward: a cell phone detector can only count cell phones. For example, a bus with 18 people using cellphones on it is not 18 cars. A video camera, on the other hand, can tell you exactly how many cars are on the road, and what types and sizes, and their speeds.

      --
      "Who is the Journal of Quantum Physics going to believe?" --Stephen Hawking
    5. Re:what? by mspohr · · Score: 3, Insightful

      A cell phone tracker can tell how fast traffic is moving by knowing how fast each particular phone traveled from point A to point B. You don't really need to know how many cars/busses/trucks are on the road. You only need one cell phone traveling to tell the speed of the traffic which is the important information here.

      --
      I don't read your sig. Why are you reading mine?
  3. How about using "search" to track dupes? by Gothmolly · · Score: 4, Informative

    For instance, a simple search would have uncovered This Page.

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    I want to delete my account but Slashdot doesn't allow it.
  4. I'll save them some money by stlhawkeye · · Score: 4, Funny

    Traffic is bad on 40 East in the morning and 40 West in the afternoon. 270 is often packed too. Source: me. I drive it every day.

    --
    "I have never won a debate with an ignorant person." -Ali ibn Abi Talib
  5. EZ-Pass aleady used for this... by marcsiry · · Score: 5, Informative

    Automated toll collection tags used in the Northeast ("EZ-Pass") are already being used to monitor traffic flow. Not only are these tags traceable to you, they are connected to your credit card, which is auto-debited for tolls. Currently they are not being used to auto-ticket speeders (you wouldn't even need to use 'sophisticated' math to figure that one out), but they do warn that the EZ-Pass info will be used for traffic monitoring and monitoring 'violations of your agreement.'

    Here it is in the service agreement (search onpage for 'monitoring'):

    https://www.ezpass.csc.paturnpike.com/paturnpike/t erms.asp

    --
    Marc Siry || interactive media professional, motorcycle enthusiast ||
  6. What they will find out... by TheOtherAgentM · · Score: 3, Insightful

    is that cell phones are the cause of much traffic. People on cell phones slow down or even get into accidents.

  7. Re:Slippery Slope by AKAImBatman · · Score: 4, Informative

    From Lectric Law Library:

    CIRCUMSTANTIAL EVIDENCE - Circumstantial evidence is best explained by saying what it is not - it is not direct evidence from a witness who saw or heard something. Circumstantial evidence is a fact that can be used to infer another fact..

    Circumstantial evidence is generally admissible in court unless the connection between the fact and the inference is too weak to be of help in deciding the case.


    You need a lot more than a single circumstantial fact to "prove" that someone committed a crime. Rather, you need a large number of such facts that close in on the case and provide a single, inescapable conclusion. Even if you have done that, be prepared for the defense to argue each point under a "hypothetical" context, thus convincing the jury that the "evidence" is nothing more than a set of coincidences presented in such a way as to make the defendent look guilty.

  8. Be careful what you assume by LaughingCoder · · Score: 5, Insightful

    So then, a bus full of high school teenagers with cell phones will look like a major traffic jam?

    --
    The more you regulate a company, the worse its products become.
  9. It doesn't matter by rancmeat · · Score: 3, Interesting
    It doesn't matter what they say the info will be used for. The fact is they will be storing it, and as long as it exists there is the certainty that a lawyer will be able to convince a judge to use it for what it was never intended for.

    Let's say the neighbor of a good friend is busted selling drugs. The DA could subpoena records that show you visiting that location on a regular basis, and suddenly you find yourself with a lot of unwanted and unwarranted attention.

    It doesn't matter what the data is intended for, the collection of it opens a Pandora's box and the sincerity of the original party collecting the data becomes meaningless when the data vultures show up at the feast.

  10. Re:Does powering off work? by Detritus · · Score: 3, Informative

    All of the cell phones that I have seen turn off the receiver and transmitter when they are turned off. The only things that stay on are the clock, keyboard scanning, battery charger controller and backup power for volatile memory.

    --
    Mea navis aericumbens anguillis abundat
  11. Re:Ever more glad I don't have a cell phone by marcsiry · · Score: 3, Insightful

    Lucky you! Now you can go back to the exciting days of sitting at home because you are 'expecting a call!'

    You get to be one of those fortunate jobhunters who 'wait by the phone!'

    For some bizarre reason, when my cellphone goes off I am somehow able to ignore it... in fact, I rarely pick up my phone for any caller unless it's someone I *really* want to speak with. No caller ID? You're welcome to leave a voicemail that I may review at some point in the future.

    To me, a cellphone is an enabling technology- it enables me to make and receive phone calls at my convenience. It does not force me to take work calls after hours, nor does it force me to answer it everytime it rings in a movie theater. Those are human behaviors that I can control. I guess if you can't control your own behaviors, then getting rid of the technology that enables bad behaviors is the only answer...

    --
    Marc Siry || interactive media professional, motorcycle enthusiast ||
  12. Re:hypocritic by Tackhead · · Score: 5, Informative
    > Aren't they a bit hypocritic when they discourage cell phone use on the road on one hand, and then try to use cell phone usage to track traffic?

    Not hypocritical at all.

    A cell phone is trackable even when its owner is not talking on it.

    This article provides a good outline on what happens. Basically, there's a control channel, through which your phone communicates whenever it's got a battery in it. Your phone listens for an SID (System Identification Code) on this channel, and tells the appropriate MTSO (Mobile Telephone Switching Office) "Hi, I'm here". The MTSO has to know where you are, so that it can route incoming calls to the device.

    All that's happening here is that the traffic monitoring folks are listening in on the back-channel communications between a large number of cell phones and base stations, and using the changes in location (as averaged over a large number of devices) to guesstimate the average speed of traffic. Individualized cell phone tracking is useless for a traffic flow application, so it's actually highly likely that the traffic folks are telling you the truth when they say that individual data isn't being logged, and that only aggregate data is being recorded.

    The technology's nothing new - a system like this is necessarily a part of any wireless phone system, otherwise your phone couldn't ring when someone called you. No such agency is now permitted to do such a thing domestically (a sentence that can be parsed in at least eight ways, all of which are true), but they probably don't, because everyone else who's also interested in individualized tracking, is already doing this, has been doing this for years, and is using other tricks in software to locate their targets to within a few meters, all in real-time. They aren't using the traffic-control folks' data, because they don't need it.

  13. Re:As a St. Louis commuter... by hebie · · Score: 3, Funny

    I am calling in from my cell...please keep this brief, but what is a lane change indicator

  14. In the words of C.W. McCall... by Overzeetop · · Score: 4, Funny

    ...We Got Us A CONVOY..."

    --
    Is it just my observation, or are there way too many stupid people in the world?