[aprssig] APRS Comment/Status Text Guidelines

Chris Rose kb8uih at sbcglobal.net
Thu Nov 20 15:52:04 EST 2008

Traffic reports are being transmitted via APRS now.  I can't give a specific locatiion or locations but I have seen them show up as "?" and the Icon name is TRAFIC or some such thing.  But, I don't know what the source is or how data is being assimilated.  

Now that I think about it, I have heard interference on my 2M APRS rig while travelling in the last two years or so to GA, FL to name a few and have seen devices on the shoulder of construction areas on X ways.  I didn't get a chance to look at the radio when I went by to see if I was picking up out of band splatter or in band data.  Too busy driving in the one lane that I could use.


--- On Thu, 11/20/08, Jack Spitznagel <frawg at frawg.org> wrote:

> From: Jack Spitznagel <frawg at frawg.org>
> Subject: Re: [aprssig] APRS Comment/Status Text Guidelines
> To: bruninga at usna.edu, "TAPR APRS Mailing List" <aprssig at tapr.org>
> Date: Thursday, November 20, 2008, 10:34 AM
> Hi Bob, All,
> Did you ever look at using the the automated reporting info
> that is
> provided by many states with traffic monitoring systems?
> Maryland may be
> an exception because of the urbanization of the central
> part of the
> state but look at:
> http://www.chart.state.md.us/travinfo/speedData.asp
> and the associated map system at:
> http://www.chart.state.md.us/MapNet/default.aspx
> Click on the Baltimore - Washington area to see their map
> display which
> also  reports "traffic events" . 
> The position of speed monitoring equipment is well known
> and it is
> updated every 5 minutes. You could cherry pick the
> monitoring points you
> want to report over the system as described below. I have
> been
> considering a way to create my own "POI's"
> that map that data using the
> SV2AGW tracker...
> Just a thought!
> Jack - kd4iz
> Robert Bruninga wrote:
> > We experimented back in the 90's on radar guns and
> acoustic
> > sensors but found the simple tracking of other APRS
> stations to
> > be the easiest method for automatically generating
> these signs.
> > See www.aprs.org/traffic.html
> >
> > In a city, someone prepares a list of traffic choke
> points.
> > THen the APRStfc.EXE program monitors the APRS mobiles
> through
> > those points and updates the signs objects.
> >
> > Then any followon APRS travelrs can see on their
> radios, the
> > speed of traffic past these favorite checkpoints.
> >
> > Bob, Wb4APR
> >   
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