public DirectionsApiRequest departureTimeNow() {
    return param("departure_time", "now");
  }
Set the departure time for a transit or driving directions request as the current time. If
traffic model is supplied, then departure time must be specified. Duration in traffic will only
be returned if the departure time is specified.

@return Returns this {@code DirectionsApiRequest} for call chaining.
src/main/java/com/google/maps/DirectionsApiRequest.java