Abstract
Integrating a field of transportation and IT is becoming a novel solution to social and economic problems which was previously focused on the investment in infrastructures. It also created new areas of industry such as ITS and telematics. Especially, vehicle communication is being considered very important and DSRC is also important in the field of national ITS in recent. DSRC OBE has come into wide use through ETCS. DSRC (Dedicated Short Range Communication) is one ITS wireless communication technology that is widely used under the name "Hi-Pass" on highways throughout the ETCS (Electric Toll Collection System) in Korea. This system is currently under construction on an expressway as total of 241 "Hi-Pass" stations on 527 roads. With the expansion of the ETCS network, the number of OBE (On Board Equipment) units is expected to increase to 3,500,000 over the next year. In the field of traffic signal control, the research to implement an optimal traffic signal control system using real-time information of good quality is being carried out. This paper shows the development of Dynamic-Dilemma zone warning service utilizing DSRC and the evaluation of a reliability and a practicality through the field test. While the proposed Dynamic-Dilemma warning system transmits information of signal time optimized by traffic signal controller, the OBE which receives this information makes dilemma zone based on its location and speed and gives warning to a driver.
Keywords: Dilemma warning, signal control system, vehicle safety, DSRC, ITS, Telematics