GeoRSS feed - Traffic Sensor Stations
The GeoRSS feed can be accessed via the following URL: http://www.vdotdatasharing.org/GeoRSS/TSSData The feed contains the following fields:| Field | Description | Example |
|---|---|---|
| title | Includes the full Detector name | TSS Sim Device 209 Lane 1 |
| description | Contains the information, volume, occupancy, and speed values of this detector | Volume: 3198 Occupancy: 84 Speed: 11 Route Name: I-64 Lane Number: 1 Lane Type: Normal Lane Direction: E Mile Marker: 0.0 Node Id: 1 Updated At: Dec 11, 2012 10:46:12 AM |
| link | This is a link to the XML message for this detector | http://www.vdotdatasharing.org/xmldb/TssDetectorStatus/NOVA-TSS-79148 |
| georss:point | This is the GIS location of the detector | 37.49080 -79.48948 |
XML Database Record
The XML database record can be accessed via the following URL: http://www.vdotdatasharing.org/xmldb/TssDetectorStatus/sender_id where sender_id is the id for the specific traffic sensor. The following is an example of the XML record:
<orci:stationList xmlns:tmdd="http://www.tmdd.org/3/messages"
xmlns:orci="http://www.openroadsconsulting.org/detector">
<orci:station>
<orci:inventory>
<detector-station-inventory-header>
<organization-information>
<organization-id>VDOT</organization-id>
</organization-information>
<device-id>NOVA-TSS-79148</device-id>
<device-location>
<latitude>38020767</latitude>
<longitude>-79303659</longitude>
</device-location>
<device-name>TSS Sim Device 209</device-name>
<link-name>I-64</link-name>
<link-direction>E</link-direction>
<linear-reference>0</linear-reference>
<last-update-time>
<date>20121211</date>
<time>104004</time>
<offset>-0500</offset>
</last-update-time>
</detector-station-inventory-header>
<detector-list>
<detector>
<detector-inventory-header>
<device-id>NOVA-TSS-79148-1</device-id>
<device-name>TSS Sim Device 209 E Normal Lane 1</device-name>
<device-description>Normal</device-description>
<node-id>1</node-id>
<link-direction>E</link-direction>
</detector-inventory-header>
<detection-lanes>
<lanes>1</lanes>
</detection-lanes>
</detector>
<detector>
<detector-inventory-header>
<device-id>NOVA-TSS-79148-2</device-id>
<device-name>TSS Sim Device 209 E Normal Lane 2</device-name>
<device-description>Normal</device-description>
<node-id>1</node-id>
<link-direction>E</link-direction>
</detector-inventory-header>
<detection-lanes>
<lanes>2</lanes>
</detection-lanes>
</detector>
<detector>
<detector-inventory-header>
<device-id>NOVA-TSS-79148-3</device-id>
<device-name>TSS Sim Device 209 W Normal Lane 3</device-name>
<device-description>Normal</device-description>
<node-id>1</node-id>
<link-direction>W</link-direction>
</detector-inventory-header>
<detection-lanes>
<lanes>3</lanes>
</detection-lanes>
</detector>
<detector>
<detector-inventory-header>
<device-id>NOVA-TSS-79148-4</device-id>
<device-name>TSS Sim Device 209 W Normal Lane 4</device-name>
<device-description>Normal</device-description>
<node-id>1</node-id>
<link-direction>W</link-direction>
</detector-inventory-header>
<detection-lanes>
<lanes>4</lanes>
</detection-lanes>
</detector>
</detector-list>
</orci:inventory>
<orci:data>
<detector-list>
<detector-data-detail>
<detector-id>NOVA-TSS-79148-1</detector-id>
<vehicle-count>3321</vehicle-count>
<vehicle-occupancy>82</vehicle-occupancy>
<vehicle-speed>75</vehicle-speed>
<start-time>
<date>20121211</date>
<time>103904</time>
<offset>-0500</offset>
</start-time>
<end-time>
<date>20121211</date>
<time>104004</time>
<offset>-0500</offset>
</end-time>
</detector-data-detail>
<detector-data-detail>
<detector-id>NOVA-TSS-79148-2</detector-id>
<vehicle-count>1792</vehicle-count>
<vehicle-occupancy>53</vehicle-occupancy>
<vehicle-speed>3</vehicle-speed>
<start-time>
<date>20121211</date>
<time>103904</time>
<offset>-0500</offset>
</start-time>
<end-time>
<date>20121211</date>
<time>104004</time>
<offset>-0500</offset>
</end-time>
</detector-data-detail>
<detector-data-detail>
<detector-id>NOVA-TSS-79148-3</detector-id>
<vehicle-count>2723</vehicle-count>
<vehicle-occupancy>41</vehicle-occupancy>
<vehicle-speed>1</vehicle-speed>
<start-time>
<date>20121211</date>
<time>103904</time>
<offset>-0500</offset>
</start-time>
<end-time>
<date>20121211</date>
<time>104004</time>
<offset>-0500</offset>
</end-time>
</detector-data-detail>
<detector-data-detail>
<detector-id>NOVA-TSS-79148-4</detector-id>
<vehicle-count>3968</vehicle-count>
<vehicle-occupancy>93</vehicle-occupancy>
<vehicle-speed>47</vehicle-speed>
<start-time>
<date>20121211</date>
<time>103904</time>
<offset>-0500</offset>
</start-time>
<end-time>
<date>20121211</date>
<time>104004</time>
<offset>-0500</offset>
</end-time>
</detector-data-detail>
</detector-list>
</orci:data>
</orci:station>
</orci:stationList>
The following data elements are represented in the XML message:
| Line | Field | Description |
|---|---|---|
| 7 | organization-id | The organization responsible for this sensor |
| 9 | device-id | The id of the station |
| 11 | latitude | The detector's latitude in millionth of degrees |
| 12 | longitude | The detector's longitude in millionth of degrees |
| 15 | link-name | The roadway on which the detector is located |
| 17 | linear-reference | The milemarker where the detector is located |
| 19 | date | The date for the detector update in yyymmdd format |
| 20 | time | The time for the detector status update in hhmmss format |
| 21 | offset | The time zone offset time in hhmm format |
| 28 | device-name | The detector's name |
| 29 | device-description | The lane type that the detector monitors. For Hampton Roads Sensor Stations, a value of Aggregate defines an average of speed data from the number of lanes defined in the lanes element. |
| 31 | link-direction | The direction of travel associated with the detector |
| 34 | lanes | The lane number that the detector monitors |
| 79 | vehicle-count | The volume of the lane |
| 80 | vehicle-occupancy | The occupancy of the lane as a percentage |
| 81 | vehicle-speed | The speed of the lane in miles per hour |
| 82 | start-time | The start time of the period for the detector status update in hhmmss format |
| 87 | end-time | The end time of the period for the detector status update in hhmmss format |
WMS-C Layer
The WMS-C layer can be accessed using the following parameters:| Service | http://www.vdotdatasharing.org/geowebcache/service/wms |
|---|---|
| Layer | tss_detector_status |
| Format | image/png |
| Tile Size | 256x256 |
| SRS | EPSG:900913 EPSG:4326 |
WFS Layer
The WFS layer can be accessed here. The feed contains the following fields:
| Field | Description | Example |
|---|---|---|
| orci:detectorid | This is the detector id as assigned by the sender | NOVA-TSS-79148-1 |
| orci:stationid | This is the station id as assigned by the sender | NOVA-TSS-79148 |
| orci:v7_detectorid | This is the historical detector id as assigned by the sender | NOVA-TSS-79148-1 |
| orci:v7_stationid | This is the historical station id as assigned by the sender | NOVA-TSS-79148 |
| orci:device_name | This is the name of the station as assigned by the sender | TSS Sim Device 209 W Normal Lane 4 |
| orci:lane_direction | This is the direction of travel of the lane that the detector monitors | E |
| orci:lanetype | This is the type of lane that the detector monitors | Normal |
| orci:lanenum | This is the number of the lane that the detector monitors | 1 |
| orci:last_updated | This is the last time the detector has been updated | 2012-01-05T18:00:00Z |
| orci:mile_marker | This is the mile marker where the detector is located | 0.0 |
| orci:occupancy | This is the occupancy of the lane | 49 |
| orci:routename | This is the route name on which the detector is located | I-95 |
| orci:speed | This is the speed of the lane in miles per hour | 41 |
| orci:the_geom | This is the location of the detector | <gml:Point srsDimension="2" srsName="urn:x-ogc:def:crs:EPSG:4326"><gml:pos>37.490801 -79.489489</gml:pos><gml:Point> |
| orci:volume | This is the volume of the lane | 1929 |
| orci:sample_period | The period of time in seconds that elpased when measuring lane data. A value of -1 indicates that the detector is not currently reporting it's sample period. | 60 |