Last year, the MBC (Munhwa Broadcasting Company) of Korea started the services of disseminating both traffic information and DGPS signal using the FM stereo broadcast. The FM stereo broadcast here is based on the use of 100 KHz baseband to transmit stereophonic signals. It only uses 53 KHz bandwidths, and the redundant 53-100 KHz band can be used for digital data and/or other stereophonic services, whose typical examples of such kind are R(B)DS, DARC, STIC, and HSDS. The DARC is used in this study and although the service is not widespread at the moment, some needs of quantifying the effects of dynamic traffic information and DGPS signal, especially in a congested urban traffic network like Seoul's, have been growing recently before the full scale deployment of such service. In this paper, the authors describe the procedure of such framework of effects quantification and identify some critical results that may shed light on the performance of the network, including average running speed, travel time, delay, gas consumption and emission, etc, and a desirable evolution of the system. With the INTEGRATION simulation model for some scenarios, the derived results show that FM DARC based traffic information broadcast reduces both delay and total travel time by up to 17 and 5 percent respectively, and increases average running speed by 13.5 percent at the market penetration rate of 30 percent, which seems to be the best market penetration in terms of benefits to society as a whole. For the covering abstract see ITRD E114174.
Abstract