Example Traffic Flow DATEX II Response

This section breaks down the DATEX II Flow XML Response. The Traffic Flow Response is a DATEX II Class B Extension. This extension is still compatible with the non- extended version of DATEX II (Class A). Therefore, for ElaboratedData (Flow), we have extended the TravelTimeData class to support AverageSpeed, Traffic Status (Level of Service), Jam Factor and Flow Sub-Sections and lane-level traffic. We created a new class TravelTimeSection to represent Flow Sections, which is used by our extended class TravelTimeDataExtended. We created the class LaneInfo to represent lane-level traffic. For an in-depth explanation of DATEX II Class B Extensions, see the DATEX II Extension Guide.

This response contains the following high level elements

• a timestamp of the obtained traffic data
• an <ElaboratedData> element that contains the OpenLR data and other details

Example XML Response

<?xml version="1.0" encoding="UTF-8"?>
<d2LogicalModel xmlns="http://datex2.eu/schema/2/2_0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" modelBaseVersion="2" xsi:schemaLocation="http://datex2.eu/schema/2/2_3/DATEXIISchema_2_2_3.xsd">
   <exchange>
      <supplierIdentification>
         <country>other</country>
         <nationalIdentifier />
      </supplierIdentification>
   </exchange>
   <payloadPublication lang="en" xsi:type="ElaboratedDataPublication">
      <publicationTime>2018-06-15T00:00:00Z</publicationTime>
      <publicationCreator>
         <country>other</country>
         <nationalIdentifier />
      </publicationCreator>
      <headerInformation>
         <confidentiality>noRestriction</confidentiality>
         <informationStatus>real</informationStatus>
      </headerInformation>
      <elaboratedData>
         <basicData xsi:type="TravelTimeData">
            <measurementOrCalculationTime>2018-06-15T00:00:00Z</measurementOrCalculationTime>
            <pertinentLocation xsi:type="Linear">
               <linearExtension>
                  <openlrExtendedLinear>
                     <firstDirection>
                        <openlrLocationReferencePoint>
                           <openlrCoordinate>
                              <latitude>52.474598</latitude>
                              <longitude>4.654298</longitude>
                           </openlrCoordinate>
                           <openlrLineAttributes>
                              <openlrFunctionalRoadClass>FRC1</openlrFunctionalRoadClass>
                              <openlrFormOfWay>motorway</openlrFormOfWay>
                              <openlrBearing>281</openlrBearing>
                           </openlrLineAttributes>
                           <openlrPathAttributes>
                              <openlrLowestFRCToNextLRPoint>FRC1</openlrLowestFRCToNextLRPoint>
                              <openlrDistanceToNextLRPoint>500</openlrDistanceToNextLRPoint>
                           </openlrPathAttributes>
                        </openlrLocationReferencePoint>
                        <openlrLocationReferencePoint>
                           <openlrCoordinate>
                              <latitude>52.472345</latitude>
                              <longitude>4.652345</longitude>
                           </openlrCoordinate>
                           <openlrLineAttributes>
                              <openlrFunctionalRoadClass>FRC1</openlrFunctionalRoadClass>
                              <openlrFormOfWay>motorway</openlrFormOfWay>
                              <openlrBearing>267</openlrBearing>
                           </openlrLineAttributes>
                           <openlrPathAttributes>
                              <openlrLowestFRCToNextLRPoint>FRC1</openlrLowestFRCToNextLRPoint>
                              <openlrDistanceToNextLRPoint>500</openlrDistanceToNextLRPoint>
                           </openlrPathAttributes>
                        </openlrLocationReferencePoint>
                        <openlrLastLocationReferencePoint>
                           <openlrCoordinate>
                              <latitude>52.471325</latitude>
                              <longitude>4.651895</longitude>
                           </openlrCoordinate>
                           <openlrLineAttributes>
                              <openlrFunctionalRoadClass>FRC1</openlrFunctionalRoadClass>
                              <openlrFormOfWay>motorway</openlrFormOfWay>
                              <openlrBearing>260</openlrBearing>
                           </openlrLineAttributes>
                        </openlrLastLocationReferencePoint>
                        <openlrOffsets>
                           <openlrPositiveOffset>0</openlrPositiveOffset>
                           <openlrNegativeOffset>0</openlrNegativeOffset>
                        </openlrOffsets>
                     </firstDirection>
                  </openlrExtendedLinear>
               </linearExtension>
            </pertinentLocation>
            <travelTimeType>instantaneous</travelTimeType>
            <travelTime>
               <duration>180</duration>
            </travelTime>
            <freeFlowSpeed>
               <speed>50</speed>
            </freeFlowSpeed>
            <travelTimeDataExtension>
               <travelTimeDataExtended>
                  <travelTimeSection>
                     <jamFactor>0.500000</jamFactor>
                     <freeFlowSpeed>
                        <speed>50</speed>
                     </freeFlowSpeed>
                     <averageSpeed>
                        <speed>20</speed>
                     </averageSpeed>
                     <trafficStatus>
                        <trafficStatusValue>freeFlow</trafficStatusValue>
                     </trafficStatus>
                     <travelTime>
                        <duration>180</duration>
                     </travelTime>
                     <length>
                        <integerMetreDistance>1000</integerMetreDistance>
                     </length>
                  </travelTimeSection>
               </travelTimeDataExtended>
            </travelTimeDataExtension>
         </basicData>
      </elaboratedData>
   </payloadPublication>
</d2LogicalModel>