PTV Group - Logistics Forum

Posted: **Tue Apr 21, 2020 2:41 pm**

Hello,

We are integrating with the xserver2 service to calculate the route and have this request

array:6 [
  "resultFields" => array:5 [
    "polyline" => true
    "legs" => array:3 [
      "enabled" => true
      "polyline" => false
      "tollSummary" => true
    ]
    "toll" => array:3 [
      "enabled" => true
      "sections" => true
      "systems" => true
    ]
    "eventTypes" => array:3 [
      0 => "TOLL_EVENT"
      1 => "COUNTRY_EVENT"
      2 => "ROUTE_VIOLATION_EVENT"
    ]
    "segments" => array:3 [
      "enabled" => true
      "polyline" => true
      "featureThemeIds" => array:2 [
        0 => "PTV_SpeedPatterns"
        1 => "PTV_TrafficIncidents"
      ]
    ]
  ]
  "geometryOptions" => array:1 [
    "responseGeometryTypes" => array:1 [
      0 => "PLAIN"
    ]
  ]
  "routeOptions" => array:2 [
    "tollOptions" => array:1 [
      "useDetailedToll" => true
    ]
    "timeConsideration" => array:2 [
      "$type" => "ExactTimeConsiderationAtStart"
      "referenceTime" => "2020-04-21T16:55:59+03:00"
    ]
  ]
  "requestProfile" => array:4 [
    "featureLayerProfile" => array:1 [
      "themes" => array:2 [
        0 => array:2 [
          "id" => "PTV_SpeedPatterns"
          "enabled" => true
        ]
        1 => array:2 [
          "id" => "PTV_TrafficIncidents"
          "enabled" => true
        ]
      ]
    ]
    "routingProfile" => array:1 [
      "course" => array:2 [
        "toll" => array:1 [
          "tollPenalty" => 0
        ]
        "distanceTimeWeighting" => 90
      ]
    ]
    "vehicleProfile" => array:1 [
      "electronicTollCollectionSubscriptions" => "NONE"
    ]
    "currency" => "EUR"
  ]
  "coordinateFormat" => "EPSG:4326"
  "waypoints" => array:3 [
    0 => array:2 [
      "$type" => "OffRoadWaypoint"
      "location" => array:1 [
        "offRoadCoordinate" => array:2 [
          "x" => "26.102863317"
          "y" => "44.434272809"
        ]
      ]
    ]
    1 => array:2 [
      "$type" => "OffRoadWaypoint"
      "location" => array:1 [
        "offRoadCoordinate" => array:2 [
          "x" => "2.1700115889"
          "y" => "41.388038574"
        ]
      ]
    ]
    2 => array:2 [
      "$type" => "OffRoadWaypoint"
      "location" => array:1 [
        "offRoadCoordinate" => array:2 [
          "x" => "37.615020727"
          "y" => "55.756961791"
        ]
      ]
    ]
  ]
]

The call takes from about 40 seconds to 1min and 17 seconds tops, and earlier today we had a few timeouts in the code as well. Let us know if this is a knows issue for you guys, as it was not the case in the past and is there a way to determine more predictable if future calls result in a timeout?

Best regards,
John

Posted: **Tue Apr 21, 2020 4:06 pm**

Hello John,

a quick check of the coordinates returnes a routen with several thousand kilometers length.
Not sure whether PTV_SpeedPatterns are meaningful but if I am right they cause at least a part of the trouble.

I wrote a sample application I used to pley with some of the parameters you applied (played it on PROD and TEST):

No additional FeatureLayers: roughly 8.5 secs
Only PTV_TrafficIncidents : roughly 11 secs
PTV_TrafficIncidents + PTV_SpeedPatterns : between 40 and 70 secs

This test is surely quite surficial but it shows the impact of the additional layers.
I will forward this post to DEV for a statement though I am sure the recommendation is "don't use SPEED PATTERNS on such an international trip).

Best regards,
Bernd

Posted: **Wed Apr 29, 2020 6:46 am**

Hello Bernd,

Thank you for your reply. Please let us know when you hear form the dev theam if speed patterns are not supported for international trips. Also, is there any other way to determine traffic without speed patterns?

Thanks,
John

Posted: **Wed Apr 29, 2020 8:09 am**

well, technically spoken PTV_SpeedPatterns work also on long distances with an known, significant impact on performance.
The question on top is "is the quality of the output meaningful? Does it make sense to predict a road condition with a local timestamp on a segment that is ten/twenty or more hours ahead of the start time?"

I'd therefore recommend to skip the PTV_SpeedPatterns (by the way: PTV_TruckSpeedPatterns) and to use some other available (and performant) approaches such as
- focus on PTV_TrafficIncidents
- combined with TimeConsiderationMode.TimeSPan
This enables you to consider current road networks if they last for a few days or more.

Feedback is welcome

Bernd

PTV Group - Logistics Forum

Calculate route takes upwards of 40 seconds

Calculate route takes upwards of 40 seconds

Re: Calculate route takes upwards of 40 seconds

Re: Calculate route takes upwards of 40 seconds

Re: Calculate route takes upwards of 40 seconds