| 摘要 |
The present invention relates to a method for displaying traffic information related to a road on which a vehicle is traveling by using a navigation system, and to a method for generating traffic information reflecting a change in traffic flow so as to display real-time traffic information and change progress information on traffic flow from a previous time point to a current time point as time-based change information. A method for generating a traffic information summary map according to the present invention comprises the steps of: deriving first traffic flow information from a time point before the previous time point to a time point just before the current time point for each link; deriving second traffic flow information from the time point just before the current time point to the current time point for each link; deriving a mean speed for each link from the first traffic flow information and the second traffic flow information; deriving traffic flow change progress information from the first traffic flow information and the second traffic flow information; and generating traffic information by combining the mean speed and the traffic flow change progress information for each link. |
