title: here api shows smaller trafficTime for route with same start and end points but via addtional waypoint
body: <p>How come trafficTime (fastest) from A to B is longer than trafficTime from A to B via C, in the same arrival/departure times?</p>
  
  <p>V7 requests:
  A to B: trafficTime = 4979 seconds
  <a href="https://route.ls.hereapi.com/routing/7.2/calculateroute.json?apiKey=KEY&amp;waypoint0=32.6289624435649%2C35.079885159610136&amp;waypoint1=32.0155%2C34.7505&amp;mode=fastest%3Bcar&amp;combineChange=true&amp;language=he&amp;instructionformat=text&amp;departure=2020-05-21T10:00:00.000Z" rel="nofollow noreferrer">https://route.ls.hereapi.com/routing/7.2/calculateroute.json?apiKey=KEY&amp;waypoint0=32.6289624435649%2C35.079885159610136&amp;waypoint1=32.0155%2C34.7505&amp;mode=fastest%3Bcar&amp;combineChange=true&amp;language=he&amp;instructionformat=text&amp;departure=2020-05-21T10:00:00.000Z</a></p>
  
  <p>A to B via C: trafficTime = 4936 seconds
  <a href="https://route.ls.hereapi.com/routing/7.2/calculateroute.json?apiKey=KEY&amp;waypoint0=32.6289624435649%2C35.079885159610136&amp;waypoint1=32.119485%2C34.938341&amp;waypoint2=32.0155%2C34.7505&amp;mode=fastest%3Bcar&amp;combineChange=true&amp;language=he&amp;instructionformat=text&amp;departure=2020-05-21T10:00:00.000Z" rel="nofollow noreferrer">https://route.ls.hereapi.com/routing/7.2/calculateroute.json?apiKey=KEY&amp;waypoint0=32.6289624435649%2C35.079885159610136&amp;waypoint1=32.119485%2C34.938341&amp;waypoint2=32.0155%2C34.7505&amp;mode=fastest%3Bcar&amp;combineChange=true&amp;language=he&amp;instructionformat=text&amp;departure=2020-05-21T10:00:00.000Z</a></p>
  
  <p>V8 also
  A to B: duration = 3987 seconds
  <a href="https://router.hereapi.com/v8/routes?transportMode=car&amp;return=travelSummary,summary,polyline,actions&amp;origin=32.6289624435649,35.079885159610136&amp;destination=32.0155,34.7505&amp;apikey=KEY" rel="nofollow noreferrer">https://router.hereapi.com/v8/routes?transportMode=car&amp;return=travelSummary,summary,polyline,actions&amp;origin=32.6289624435649,35.079885159610136&amp;destination=32.0155,34.7505&amp;apikey=KEY</a></p>
  
  <p>A to B via C: duration = 3955 seconds
  <a href="https://router.hereapi.com/v8/routes?transportMode=car&amp;return=travelSummary,summary,polyline,actions&amp;origin=32.6289624435649,35.079885159610136&amp;destination=32.0155,34.7505&amp;via=32.119485,34.938341!stopDuration=0&amp;apikey=KEY" rel="nofollow noreferrer">https://router.hereapi.com/v8/routes?transportMode=car&amp;return=travelSummary,summary,polyline,actions&amp;origin=32.6289624435649,35.079885159610136&amp;destination=32.0155,34.7505&amp;via=32.119485,34.938341!stopDuration=0&amp;apikey=KEY</a></p>
  
  <p>If I request to show several alternatives (available only without "arrival" param) I get even faster and shorter route:
  V7 A to B with alternatives: fastest trafficTime = 4765
  <a href="https://route.ls.hereapi.com/routing/7.2/calculateroute.json?apiKey=KEY&amp;waypoint0=32.6289624435649%2C35.079885159610136&amp;waypoint1=32.0155%2C34.7505&amp;mode=fastest%3Bcar&amp;combineChange=true&amp;language=he&amp;instructionformat=text&amp;departure=2020-05-21T10:00:00.000Z&amp;alternatives=9" rel="nofollow noreferrer">https://route.ls.hereapi.com/routing/7.2/calculateroute.json?apiKey=KEY&amp;waypoint0=32.6289624435649%2C35.079885159610136&amp;waypoint1=32.0155%2C34.7505&amp;mode=fastest%3Bcar&amp;combineChange=true&amp;language=he&amp;instructionformat=text&amp;departure=2020-05-21T10:00:00.000Z&amp;alternatives=9</a></p>