<html><head></head><body>At least in tennesse there is a RSS feed for some of the wrecks and construction.<br>
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Sent from my Android phone with K-9 Mail. Please excuse my brevity.<br><br><div class="gmail_quote">John Gorkos <jgorkos@gmail.com> wrote:<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
<pre style="white-space: pre-wrap; word-wrap:break-word; font-family: sans-serif">Steve -<br /> Where do you get the data? This is a FANTASTIC use of APRS, one I've <br />wanted to implement in the ATL area, but I can't find a good source of data.<br /><br />John Gorkos.<br /><br />On 11/11/2011 03:14 PM, Steve wrote:<br />> Morten,<br />><br />> Here are the symbols I use for objects in my area:<br />><br />> "BUILDING FIRE" "/:"<br />> "DEBRIS/FLUIDS ON HIGHWAY" "/P"<br />> "DISABLED VEHICLE BLOCKING" "/P"<br />> "DISABLED VEHICLE" "/P"<br />> "ELECTROCUTION" "EJ"<br />> "HAZARDOUS ROAD CONDITIONS" "Hj"<br />> "PLANE CRASH" "A'"<br />> "ROAD OBSTRUCTION" "Oj"<br />> "S/B AT HELICOPTER LANDING" "/X"<br />> "TRAIN CRASH" "T'"<br />> "VEHICLE ACCIDENT FIRE POLICE" "F'"<br />> "VEHICLE ACCIDENT INJURIES" "I'"<br />> "VEHICLE ACCIDENT MOTORCYCLE" "M'"<br />> "VEHICLE ACCIDENT PEDESTRIAN STRUCK" "P'"<br />> "VEHICLE ACCIDENT
RESCUE" "R'"<br />> "VEHICLE ACCIDENT STAND-BY" "S'"<br />> "VEHICLE ACCIDENT UNKNOWN INJURIES" "U'"<br />> "VEHICLE ACCIDENT" "\'"<br />> "VEHICLE FIRE" "/:"<br />> "WOODS/FIELD FIRE" "/:"<br />><br />> any other EMS "/a"<br />> any other Fire "/f"<br />> any other Traffic "/P"<br />><br />> The Objects have a object id in the format "EMS XXXX", "FIRE XXXX", or<br />> "TFX XXXXX" where XXXX is the base36 encoded incident number. I<br />> uppercase and use the incident type and subtype as the object comment<br />> text. If the incident is along a major roadway (state route, highway,<br />> turnpike) I add an abbreviated version of the road followed by either<br />> a single pipe | if the incident affects only one lane/direction,<br />> double pipe || otherwise denotes that both lanes/directions are<br />> affected.<br />><br />> I have a self adjusting net cycle time which retransmits still active<br />> incidents
about every 20 minutes. this self-adjusts if there are a lot<br />> of incidents like during a blizzard, but it stays mostly at 20 minutes<br />> the rest of the time.<br />><br />> I send these objects out with a path including RFONLY,NOGATE and tag<br />> them with the !x! no-archive flag because I reckon that if someone has<br />> an internet connection to receive APRS-IS then they also have an<br />> internet connection to <a href="http://traffic.com">traffic.com</a> or any of the other sources for<br />> traffic/incident information, and they don't need to get this from the<br />> aprs-is backbone, unlike most stations on RF.<br />><br />> When sending object kill messages I replace the last part of the<br />> object comment text with (CLEARED) so that text-only displays like the<br />> hamhud and D700 users can see that the incident has ended.<br />><br />> I populate the Object's timestamp with the dispatch time of the<br />>
incident, comparing it to when you received the object you can<br />> calculate how long the incident has been active.<br />><br />> here's an example:<br />><br />> AB3LT-1>APZS13,WIDE2-2,EPA2-2,RFONLY,NOGATE:;TFX<br />> 6USLF*021347z4001.50NI07513.70W'I76 || VEHICLE ACCIDENT INJURIES<br />> !x!<br />><br />> AB3LT-1>APZS13,WIDE2-2,EPA2-2,RFONLY,NOGATE:;TFX<br />> 6USLF_021347z4001.50NI07513.70W'I76 || VEHICLE ACCIDENT<br />> INJURIE(CLEARED)!x!<br />><br />><br />> hope this helps and 73,<br />> Steve AB3LT<br />><br />> On Fri, Nov 11, 2011 at 3:43 AM, Morten Johansen<morten@bzzt.no> wrote:<br />>> Hi, list!<br />>><br />>> I've been following the list for a while, but this is my first post. I hope this is the right place to post this question.<br />>><br />>> The Norwegian Road Authorities are kind enough to post traffic alerts in XML format including geographic position, urgency
information and other "snacks".<br />>> For some months now I've run an experiment that analyzes these alerts for my area and injects them into the APRS-IS as objects.<br />>><br />>> There has been lots of feedback, and all interested parties (including NRRL) have been rounded up in a mailing list to try to outline a permanent service.<br />>><br />>> Alerts have a "type", of which the most common are: "closed road", "temporarily closed road" or "reduced navigability road". It basically describes the impact of the alert for traffic.<br />>><br />>> The majority of the alerts come from road work, and because of this the \j Work Zone symbol is used by default.<br />>><br />>> Our question to this list is what APRS symbols we should use for these situations:<br />>><br />>> * Closed road<br />>> * Traffic incident - \' ? We have no way of knowing if it's a car, truck or whether there are several involved. Looking
for a general traffic incident symbol.<br />>><br />>> We also would like some opinions on which symbol should have precedent in case of "closed road" because of "traffic incident".<br />>><br />>> Should the "closed road" symbol be used always for consistency?<br />>> Should the "traffic incident" symbol be used to provide information granularity?<br />>> The object text will contain a short description of the situation in any case.<br />>><br />>> de Morten LA1FTA<br />>><br />>><br />>><br />>><hr /><br />>> aprssig mailing list<br />>> aprssig@tapr.org<br />>> <a href="https://www.tapr.org/cgi-bin/mailman/listinfo/aprssig">https://www.tapr.org/cgi-bin/mailman/listinfo/aprssig</a><br />>><br />><hr /><br />> aprssig mailing list<br />> aprssig@tapr.org<br />> <a
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