title: HERE Maps Routing API doesn't find public transport route in some cities
body: <p>I'm doing a lot of public transport route calculation with HERE Maps API in 13 german cities. I have a list of coordinates for each city and I want to calculate the travel time for public transport from each coordinate to the others inside a city. </p>
  
  <p>In some cities the HERE Maps API doesn't calculate a single route and gives the error "no route found". Although the HERE Maps documentation says that public transport is covered in the cities that I chose. At the same time, the route calculation for public transport on the website wego.here.com can find a public transport route.</p>
  
  <p>Here is an example of the problem for one route in the city of Regensburg:</p>
  
  <p>The start coordinates are: 49.02406,12.07187</p>
  
  <p>The destination coordinates are: 49.01441,12.12384</p>
  
  <p>This route that is beeing calculated in the browser (wego.here.com):
  <a href="https://wego.here.com/directions/publicTransport/Clermont-Ferrand-Allee,-93049-Regensburg,-Germany:49.02399,12.07187/Straubinger-Stra%C3%9Fe-20,-Ostenviertel,-93055-Regensburg,-Germany:loc-dmVyc2lvbj0xO3RpdGxlPVN0cmF1YmluZ2VyK1N0cmElQzMlOUZlKzIwO2xhdD00OS4wMTQ0MTtsb249MTIuMTIzODQ7c3RyZWV0PVN0cmF1YmluZ2VyK1N0cmElQzMlOUZlO2hvdXNlPTIwO2NpdHk9UmVnZW5zYnVyZztwb3N0YWxDb2RlPTkzMDU1O2NvdW50cnk9REVVO2Rpc3RyaWN0PU9zdGVudmllcnRlbDtzdGF0ZUNvZGU9QmF2YXJpYTtjb3VudHk9UmVnZW5zYnVyZyslMjhTdGFkdCUyOTtjYXRlZ29yeUlkPWJ1aWxkaW5nO3NvdXJjZVN5c3RlbT1pbnRlcm5hbA?map=49.01898,12.10138,14,grey&amp;leave=1505800800000" rel="nofollow noreferrer">https://wego.here.com/directions/publicTransport/Clermont-Ferrand-Allee,-93049-Regensburg,-Germany:49.02399,12.07187/Straubinger-Straße-20,-Ostenviertel,-93055-Regensburg,-Germany:loc-dmVyc2lvbj0xO3RpdGxlPVN0cmF1YmluZ2VyK1N0cmElQzMlOUZlKzIwO2xhdD00OS4wMTQ0MTtsb249MTIuMTIzODQ7c3RyZWV0PVN0cmF1YmluZ2VyK1N0cmElQzMlOUZlO2hvdXNlPTIwO2NpdHk9UmVnZW5zYnVyZztwb3N0YWxDb2RlPTkzMDU1O2NvdW50cnk9REVVO2Rpc3RyaWN0PU9zdGVudmllcnRlbDtzdGF0ZUNvZGU9QmF2YXJpYTtjb3VudHk9UmVnZW5zYnVyZyslMjhTdGFkdCUyOTtjYXRlZ29yeUlkPWJ1aWxkaW5nO3NvdXJjZVN5c3RlbT1pbnRlcm5hbA?map=49.01898,12.10138,14,grey&amp;leave=1505800800000</a></p>
  
  <p>And here is the error when I use the HERE Maps API:</p>
  
  <pre><code>{
    "_type": "ns2:RoutingServiceErrorType",
    "type": "ApplicationError",
    "subtype": "NoRouteFound",
    "details": "Error is NGEO_ERROR_GRAPH_DISCONNECTED",
    "additionalData": [{
      "key": "error_code",
      "value": "NGEO_ERROR_GRAPH_DISCONNECTED"
    }],
    "metaInfo": {
      "timestamp": "2017-08-28T15:52:10Z",
      "mapVersion": "8.30.73.154",
      "moduleVersion": "7.2.201734-154665",
      "interfaceVersion": "2.6.34",
      "availableMapVersion": ["8.30.73.154"]
    }
  }
  </code></pre>
  
  <p>I tried to change the departure time and the "mode" = publicTransportTimeTable which won't change anything. If I set the optional parameter "walkRadius" = 4080 (meter), a route will be calculated but it contains only walking and no public transport vehicles. </p>
  
  <p>My question is if there's any errors in my http request or if anybody has similar experience using the HERE Maps API for public transport.</p>