railroad has a benefit of the mass transportation of a passenger and cargo, but just a time of accident could cause a huge loss of a human life and property. Especially, a typhoon and a localized torrential downpour usually happened in summer season have caused average 38.29 times of the missing roadbed which support the railroad in recent 7 years. If a train would pass on this railroad which the roadbed was missed, there could be a huge accident and many people will die. But, the security issue is not satisfied because the method of sensing the missing roadbed is depending solely on the naked eye inspection by a person in charge. So, in this study, I would like to suggest the missing roadbed real-time sensing and train operation system to reduce the possibility of the railroad accident by controlling the operation of train when the missing roadbed condition would be sensed in the real-time system.

Abstract
 1. 서론
 2. 노반유실의 원인 및 피해분석
  2.1 노반유실의 원인
  2.2 호우로 인한 철도노반 피해분석
  2.3 노반유실 위험성관리 실태 및 문제점 분석
 3. 검지시스템 구축방안
  3.1 검지시스템의 운영체계
  3.2 시스템의 주요구성 및 기능
 4. 노반유실 검지시스템의 효과 검증
  4.1 시스템 검증을 위한 실험과정
  4.2 실험결과
  4.3 시스템에 대한 안전성평가
 5. 결론
 6. 참고문헌

• 김기영 | Ki Young Kim
• 강경식 | Kyung Sik Kang