Abstract: A system for determining an operational state of a machine is provided. The system includes an implement position sensor configured to generate a position signal indicative of a position of an implement. The system further includes a pressure sensor configured to generate a pressure signal indicative of a pressure of a cylinder of the machine. The system also includes a controller communicably coupled to the implement position sensor and the pressure sensor. The controller is configured to receive the position signal and the pressure signal. The controller is further configured to determine a weight of a payload of the machine based on the received signals. Further, the controller is configured to determine a dig status of the machine based, at least in part, on a rate of change of the weight of the payload and the position of the implement.

Abstract: A method and apparatus for a navigation system determines whether an upcoming cross street is meaningful for a user to be displayed. The includes the steps of searching upcoming cross streets that intersect with a current street on which a user's vehicle is running for a predetermined distance range ahead of a current vehicle position, retrieving data concerning the upcoming cross streets from the map data, determining whether a cross street is meaningful for the user to be displayed on a screen of the navigation system by applying predetermined rules to the data concerning the cross street, and displaying information on the cross street that has been determined to be meaningful for the user on the screen.