Abstract: A method and apparatus for guiding a vehicle in which a transmission signal of a position transmitting device installed at key points on a roadside is received by a position receiving device mounted in the vehicle. The apparatus having members for coding position information on the road where the position transmitting device is installed and traffic information including danger information with respect to the road, storing the same, modulating and continuously transmitting the coded information to the vehicle. Also, the apparatus capable of receiving the transmission signal of a corresponding position while the vehicle is moving on the road, and continuously classifying and searching the information and the intensity of the signal. Another part of the apparatus for detecting the current position of the vehicle either by directly using the searched result or by computing a travel distance of the vehicle.

Abstract: A method for collecting traffic information is described. The method includes a position information transmitting step of installing a position transmitting device at a starting point and an ending point of a link of entire road and transmitting position information of the link to probe vehicles. There is an information receiving/classifying/searching step of receiving a transmission signal of a corresponding position while traveling on a road, and continuously classifying and searching the intensity of the signal and the position information of the link. The method also includes a travel information transmitting step of detecting the position of the probe vehicles and the starting point and the ending point of the link according to the result of searching, computing a time, a distance and a speed required for traveling the link on the basis of the detected information, and transmitting the same.