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Getting the speed limit at a particular coordinate

This is a discussion on Getting the speed limit at a particular coordinate within the MapPoint Desktop Discussion forums, part of the Map Forums category; Greetings, I have a stream of GPS locations, with travel speed, coming in from a handful of drivers, but would ...

  1. #1
    BobFromBoston is offline Senior Member Green Belt
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    Getting the speed limit at a particular coordinate

    Greetings,

    I have a stream of GPS locations, with travel speed, coming in from a handful of drivers, but would like to know the posted speed on the road they are on.

    Does anyone know how to get the road information associated with a coordinate, such that I can get the posted speed on that particular stretch of road?

    Thanks,
    Bob

    PS I use C#, but could convert from VB.

  2. #2
    Dazzer is offline Senior Member Green Belt
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    I may be wrong about this and perhaps someone else can confirm it but i'm not sure that Mappoint actually contains the speedlimit of every road. I think i'm right in saying that it has avarage speed for certain types of road (highway, street etc...) but not an actual speed limit.

  3. #3
    Eric Frost's Avatar
    Eric Frost is offline Administrator Black Belt
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    That is my understanding as well. MapPoint has the type of the roads but not the actual speed limit.

    I believe I have have heard that the data provider captures this for the Guidance systems. You might try contacting Navteq to see if they have something that is in your budget.

    Eric
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  4. #4
    cellurl is offline Junior Member White Belt
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    Re: Getting the speed limit at a particular coordinate

    There is a speed limit database.
    Wikispeedia - Wikipedia, the free encyclopedia

    Also a cruise control with source code to go with it.
    http://goo.gl/iIKqD

    Rgds,
    Jim Pruett, Director
    WikiSPEEDia.org

  5. #5
    Eric Frost's Avatar
    Eric Frost is offline Administrator Black Belt
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    Re: Getting the speed limit at a particular coordinate

    Ouch this is awesome. Do you think MS MapPoint might eventually license this data source?

    Eric
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  6. #6
    cellurl is offline Junior Member White Belt
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    Re: Getting the speed limit at a particular coordinate

    It's easy to use or embed.
    Email me any questions you might have.

    g p s cruize@gmail.com replace z with s.

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