Speed detectors on 280

Discussion in 'Bay Area Bikers' started by MB, Jul 4, 2005.

  1. MB

    MB Guest

    I run a Valentine-1 radar detector on my bike
    In the last few weeks, it's on about half the time I'm on 280 from
    Cupertino and north. Both ways.
    There are these solar powered cylindrical things on some of the
    signposts every mile or so. I think they are the sources.

    Does anyone know what they are?

    mb
     
    MB, Jul 4, 2005
    #1

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  2. MB

    Michael Sierchio Guest

    microwave relays?
     
    Michael Sierchio, Jul 4, 2005
    #2

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  3. MB

    PC Paul Guest

    IIRC these are traffic flow transponders, they feed info to Caltrans as
    to amount and general speed of traffic at various points.

    --
    PC Paul

    Trip pics at: http://photos.yahoo.com/paul1cart

    "To educate a man in mind and not in morals is to educate a menace to
    society" - Theodore Roosevelt
     
    PC Paul, Jul 8, 2005
    #3
  4. MB

    Rich, Urban Biker Guest

    Would this correspond to their locations?
    http://www.sigalert.com/map.asp?Region=Bay+Area


    Rich, Urban Biker
     
    Rich, Urban Biker, Jul 8, 2005
    #4
  5. MB

    PC Paul Guest

    PC Paul, Jul 8, 2005
    #5

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