Abstract: A method for identifying traffic information includes receiving traffic data including a first identifier, information corresponding to a prediction of an amount of congestion for a particular link, and information corresponding to a location associated with the particular link. The first identifier enables a determination of a type of the information that is included within the received traffic data. The method also includes determining a type of information included within the received traffic data based on the first identifier and determining congestion amount prediction information based on the information included in the received traffic data only if the first identifier enables a determination that the received traffic data includes a prediction related to congestion amount.

Abstract: A system for providing advertisements receives a location-based advertisement from an advertiser, transmits the advertisement to at least one navigation terminal in a wire or wireless network environment, and in the case that a user's location on a map is in an advertisement area registered by the advertiser, informs the user of the advertisement corresponding to the advertisement area in real time. The system includes an advertisement providing server for receiving application of an advertisement from the advertiser, storing the advertisement therein and transmitting the advertisement to at least one navigation terminal; and a navigation terminal for receiving the advertisement from the advertisement providing server, storing the advertisement therein, comparing a user's current location displayed on a map screen with an advertisement area, and in the case that the user's location is in the advertisement area, informing the user of the corresponding advertisement.