Apparatus for Navigation System with Traffic Environment in Vehicle, System Having the Same and Method Thereof

A vehicle navigation apparatus is provided. The apparatus includes a vehicle sensor positioned in a front or a rear of a vehicle, the vehicle sensor configured to recognize surrounding information and road information of the vehicle, and a processor configured to identify destination information requested by a user of the vehicle, identify location information of the vehicle through the vehicle sensor, identify the recognized surrounding information and the recognized road information of the vehicle, and identify information about a route according to the identified destination information by controlling the vehicle to identify information about a bus station within a range specified based on the location information of the vehicle and bus information, calculating a degree of congestion of the route, and displaying the calculated degree of congestion through a display device.