The SIRI StopMonitoring ("SIRI SM") call allows the developer to request information about the vehicles serving a particular stop.
http://api.rideuta.com/SIRI/SIRI.svc/StopMonitor?stopid={StopID}&minutesout={MinutesOut}&onwardcalls={OnwardCalls}&filterroute={FilterRoute}&usertoken={UserToken}
Request URI: http://api.rideuta.com/SIRI/SIRI.svc/StopMonitor?stopid=133054&minutesout=30&onwardcalls=true&filterroute=&usertoken=XXXXXXXXXXX
This request URI is asking for all of the vehicles on route 2 with all of their onward calls. This request results in the following response:
<Siri version="1.3" xmlns="http://www.siri.org.uk/siri"> <ResponseTimestamp>2011-05-25T14:42:28.413137-06:00</ResponseTimestamp> <StopMonitoringDelivery version="1.3"> <ResponseTimestamp>2011-05-25T14:42:28.413137-06:00</ResponseTimestamp> <ValidUntil>2011-05-25T14:42:38.413137-06:00</ValidUntil> <MonitoredStopVisit> <RecordedAtTime>2011-05-25T14:42:28.413137-06:00</RecordedAtTime> <MonitoredVehicleJourney> <LineRef>35M</LineRef> <DirectionRef>333300</DirectionRef> <FramedVehicleJourneyRef> <DataFrameRef>2011-05-25T00:00:00-06:00</DataFrameRef> <DatedVehicleJourneyRef>1183433</DatedVehicleJourneyRef> </FramedVehicleJourneyRef> <PublishedLineName>Route 35M (MAX - 3500 SOUTH)</PublishedLineName> <OriginRef>1183433|7|3500</OriginRef> <DestinationRef>1183433|7|3500</DestinationRef> <Monitored>True</Monitored> <VehicleLocation> <Longitude>-111.98111</Longitude> <Latitude>40.69673</Latitude> </VehicleLocation> <ProgressRate>1</ProgressRate> <CourseOfJourneyRef>4537</CourseOfJourneyRef> <VehicleRef>08109</VehicleRef> <MonitoredCall> <StopPointRef>17284</StopPointRef> <VisitNumber>1</VisitNumber> <VehicleAtStop>false</VehicleAtStop> <Extenstions> <EstimatedDepartureTime>593</EstimatedDepartureTime> <Direction>TO MAGNA</Direction> <Distance<6368.0072452773975</Distance> </Extenstions> </MonitoredCall> <Extensions> <LastGPSFix>2012-03-13T09:11:42.383</LastGPSFix> </Extensions> </MonitoredVehicleJourney> </MonitoredStopVisit> </StopMonitoringDelivery> </Siri>