A method and apparatus for displaying information in a vehicle is provided. Initially, navigation information is received from at least one of a remote database via a wireless network and a local sensor. A driver attention threshold is then determined from the received navigation information. Information from a network information source is displayed in the vehicle if the driver attention threshold is exceeded by a display allowance value indicative of least one of a type of information to be displayed and a type of media to be displayed.

In a liquid crystal display device, when the detected signal produced from a temperature sensor is not higher than an indicating disabling temperature of an LCD element, a controller supplies a high luminance signal to a dimmer circuit to raise a voltage to be applied to a light source, and on-off controls a driving signal within a much shorter time than the response time of the LCD element.

An indicator 19 having LEDs 20 is mounted on a panel 5 which is provided at the center of a steering handle 6 for monitoring the winkers. The indicator 19 indicates the battery charge amount with the lit up LEDs 20 and also the right or left turn of the vehicle when a winker switch 14 is turned on for indicating the corresponding steering direction. For right turns, the LEDs 20 are lit up incrementally in a sequence from the left to the right. As the LEDs 20 all have been lit up, they are temporarily turned off and their action in the incremental sequence is then repeated. For left turns, the LEDs 20 are lit up incrementally in order from the right. As the LEDs 20 all have been lit up, they are temporarily turned off and their incremental action from the right is then repeated.

The invention is directed to a display device for working vehicle, which is adapted so that additional information can be displayed. In the invention, display indication marks of the two types can be interchangeably displayed on a common display screen of a limited area without reducing the sizes of the individual marks, so that neither a larger size of a display device nor a drop in the visibility of the indication marks is necessary. This enables the driver to control a working machine such as a construction machine and have additional information about the construction machine without any trouble in the driving.

The invention concerns a method (200) and control system (100) for alerting a user of a mobile communication device (110). The method includes the steps of receiving (216) a communication request at the mobile communication device in a vehicle (114), detecting (224) whether a predetermined vehicle condition is present in response to the receipt of the communication request, assigning (226) a predetermined alert mode based on the presence of a predetermined vehicle condition and alerting (234) a user of the mobile communication device of the communication request in accordance with the assigned predetermined alert mode.