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Road map display system for vehicle

  • US 20080040022A1
  • Filed: 06/28/2007
  • Published: 02/14/2008
  • Est. Priority Date: 08/11/2006
  • Status: Active Grant
First Claim
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1. A road map display system for a vehicle, comprising:

  • a position detector for detecting a current position of the vehicle;

    a map data storing unit for storing road map data;

    a display controller for displaying a road map, speed limit information of a road, and the current position of the vehicle in a display unit based on the stored road map data;

    a congestion information acquisition unit configured to acquire congestion information for a road from an outside information center;

    a display-switching target road selection unit configured to (i) define a road, of which speed limit information is displayed by the display controller, as a determination target road, (ii) determine whether congestion information for the determination target road is acquired, and (iii) define the determination target road, for which congestion information is acquired, as a display-switching target road; and

    a display form switching unit configured to switch a display form of speed limit information of the display-switching target road from a usual display form to a congestion display form for informing a user of a presence of the congestion information.

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