Train cancellations

[fabian]

Add train cancellations to API responses.

        <RtStateList>
          <RtState value="WARNING"/>
          <RtState value="WARNING_CONNECTION_NOT_RIDABLE"/>
        </RtStateList>
        ...

              <StopPrognosis>
                <Arr handicappedAccess="2"/>
                <Dep handicappedAccess="2"/>
                <Status>PARTIAL_FAILURE_AT_ARR</Status>
              </StopPrognosis>

[ChristianKohler]

Hi Fabian, the service is really great so far but it lacks of trustabilty due to absence of cancellations and delay data. Any plans to implement cancellations and delays any time soon?

[fabian]

Hi Christian. Information about delays is actually provided by the API (prognosis). No short-term plans to add cancellations - if anyone has time a PR would be welcome.

[dragoon]

My 5 cents: if a train is fully cancelled, this is encoded in the STBJourney object, can be retrieved as follows in the Journey->createFromXml() function:

$status = trim((string)$xml->JProg->JStatus); // =="FAILURE" when cancelled

But here is another question: should we skip such trains or introduce a new attribute in the API?

[fabian]

I've captured today's disruption at Stein-Säckingen for a connection between Zürich and Basel with a canceled train (with an alternative) in hafas_response_2016-04-01.xml.

I don't think we should just emit them from the API but rather flag them with an additional attribute.

[fabian]

Added another fixture for a cancelled train in https://github.com/OpendataCH/Transport/commit/3e2d02451553f3bb486beb345c0b5571704bd0ba.

[CedricReichenbach]

For the record, here's an example of how fahrplan.search.ch reports disruptions:

{
   ...
   "connections":[
      {
         ...
         "disruptions":{
            "http://fahrplan.sbb.ch/bin/help.exe/de?tpl=showmap_external&messageID=895012&mti=1&hMap=false#hfsShm":{
               "id":"895012",
               "header":"Einschränkung: Bern - Fribourg/Freiburg",
               "lead":"Zwischen Bern und Fribourg/Freiburg ist die Strecke für den Bahnverkehr nur beschränkt befahrbar.",
               "text":"Zwischen Bern und Fribourg/Freiburg ist die Strecke für den Bahnverkehr nur beschränkt befahrbar.<br /><br /> Sie müssen mit Verspätungen und Zugausfällen rechnen.<br /><br /> Grund: Starker Schneefall<br /><br /> Dauer der Einschränkung unbestimmt.",
               "timerange":"01.03.2018 00:00 - 01.03.2018 23:59",
               "exact":false,
               "priority":40
            }
         },
      }
    ]
}