PURPOSES : This study prioritizes the potential technology for establishing an efficient traffic control in the ramp junction of urban deep underground tunnels in the future. We considered most of the applicable technologies that ensure traffic safety at the on-off ramp junction.
METHODS : This study proposes a methodology to prioritize the applicable technology for establishing efficient traffic control in the ramp junction of an urban deep underground tunnel using an analytical hierarchy process (AHP). First, an AHP structure was developed. Second, an individual survey was conducted to collect the opinions of road and transportation experts. Based on the survey results, weights were estimated depending on the relevant criteria of the developed structure. The estimated weights were verified using the consistency index (CI) and consistency ratio (CR). In addition, a sensitivity analysis was performed to confirm the reliability of the estimated weights. Finally, the potential technology for an efficient traffic control in the ramp junction of an urban deep underground tunnel was prioritized.
RESULTS : In the first level of hierarchy, traffic demand control had the highest priority, and ramp metering, section speed control, and shoulder lane control were selected in the second level of hierarchy.
CONCLUSIONS : These results implied that prioritizing would be useful in establishing traffic operation strategies for traffic safety when constructing and opening deep underground tunnels in urban areas in the future.

ABSTRACT
1. 서론
2. 연구 범위 및 방법
3. 관련 연구 고찰
4. 연구 방법론
    4.1. 개요
    4.2. 평가항목 계층구조 설정
    4.3. 설문조사
5. 분석 결과
    5.1. 우선순위 선정
    5.2. 민감도 분석
6. 결론
감사의 글
REFERENCES

• 김진국(한국건설기술연구원 차세대인프라연구센터 전임연구원) | Kim, Jin Guk
• 이건우(한양대학교 교통・물류공학과 부교수) | Lee, Gun Woo 교신저자
• 양충헌(한국건설기술연구원 차세대인프라연구센터 연구위원) | Lee, Gun Woo