The Journal of The Korea Institute of Intelligent Transport Systems (한국ITS학회 논문지)

The Korea Institute of Intelligent Transport Systems (한국ITS학회)
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Study on Improvement of Connected Vehicles Interface Board and Transition Algorithm of Digital Traffic Signal Controller for Autonomous Vehicles and C-ITS

자율주행차 및 C-ITS 지원을 위한 디지털 교통신호 제어기의 신호정보연계장치 및 전이 알고리즘 개선 연구

  • Ko, Sejin (Development Team of R&D Center, Suhdol E&C) ;
  • Choi, Eunjin (Traffic Science Institute, Road Traffic Authority) ;
  • Gho, Gwang-Yong (Traffic Science Institute, Road Traffic Authority) ;
  • Han, Eum (Traffic Science Institute, Road Traffic Authority) ;
  • Yun, Ilsoo (Dept. of Transportation Eng. Ajou University)
  • 고세진 ((주)서돌전자통신 부설연구소 개발팀) ;
  • 최은진 (도로교통공단 융합기술연구처) ;
  • 고광용 (도로교통공단 융합기술연구처) ;
  • 한음 (도로교통공단 교통공학연구처) ;
  • 윤일수 (아주대학교 교통시스템공학과)
  • Received : 2021.01.13
  • Accepted : 2021.02.26
  • Published : 2021.04.30
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Abstract

The signal intersection is the most challenging space for autonomous vehicles. To promote the safe driving of autonomous vehicles on urban roads with traffic signals, autonomous vehicles need to receive traffic signal information from infrastructure through V2I communication. Thus, a protocol for providing traffic signal information was added to the standard traffic signal controller specification of the National Police Agency. On the other hand, there are technical limitations when applying this to digital traffic signal controllers because the protocols are defined mainly for analog traffic signal controllers. Therefore, this study proposes developing a signal information linkage module to provide traffic signal information from a digital traffic signal controller to an autonomous vehicle and an algorithm improvement method that can provide accurate traffic signal information at the time of traffic signal transition.

신호교차로는 차량들의 회전 등으로 인한 상충이 빈번히 발생하고 차량의 주행이 교통신호에 의해 통제되기 때문에 자율주행차에게 가장 도전적인 공간이다. 교통신호가 존재하는 도시부 도로에서 안전한 주행을 도모하기 위해서는 자율주행차가 V2I 통신을 통하여 교통신호정보를 인프라로부터 제공받을 필요가 있다. 이러한 배경 하에 경찰청 교통신호제어기 표준규격서에는 교통신호정보 제공을 위한 규약이 추가되었다. 하지만, 기존 규약이 아날로그 교통신호제어기 위주로 정의되어 있어 현재 개발되고 있는 디지털 교통신호제어기에 적용하는 것에는 기술적 한계가 존재한다. 따라서 본 연구에서는 디지털 교통신호제어기로부터 자율주행차에게 교통신호정보를 제공하기 위한 신호정보연계모듈 개발 방안과 교통신호 전이 시의 정확한 교통신호정보를 제공할 수 있는 알고리즘 개선 방안을 제시하고자 한다.

Keywords

References

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