MapKit - transit type for MKDirectionsRequest() not Working

Now I'm doing somethig nice with Swift 3, I hope: Calculating a route between 2 places. I am using the Xcode simulator. I can calculate it by car, walking, or with transit.

This is what I have:

mapview.delegate = self
let request = MKDirectionsRequest()
request.source = MKMapItem(placemark: MKPlacemark(coordinate: CLLocationCoordinate2D(latitude: 40.203314, longitude: -8.410257), addressDictionary: nil))
    request.destination = MKMapItem(placemark: MKPlacemark(coordinate: CLLocationCoordinate2D(latitude: 40.112808, longitude: -8.498689), addressDictionary: nil))
    request.requestsAlternateRoutes = false
    //request.transportType = .automobile
    request.transportType = .transit

    let directions = MKDirections(request: request)

    directions.calculate { [unowned self] response, error in
        guard let unwrappedResponse = response else { return }

        for route in unwrappedResponse.routes {
            self.mapview.add(route.polyline)
            self.mapview.setVisibleMapRect(route.polyline.boundingMapRect, animated: true)
            print("Distance: \(route.distance/1000) m")
            print("ETA: \(route.expectedTravelTime/60) min")


            for step in route.steps {
                print(step.instructions)
            }


        }

    }

I've set the code, and everything works for car or walking. However, transit options is not doing anything.

Why is that?

Solution

Directions are not available for transportType .transit unfortunately, only ETA