Early alarm system is to detect slope movement before its collapse for road manager to respond quickly. In this paper, alarm criteria for this system is suggested when vibration and angle sensor are used.

• 김경석(한국도로공사 도로교통연구원 안전연구실, 책임연구원, 공학박사) | Kim, Kyung Suk Corresponding author
• 이강현(한국도로공사 도로교통연구원 안전연구실, 선임연구원, 공학박사) | Lee, Kang Hyun