[High speed].

Reliability Evaluation of the Speed Reduction Scheme in Korean Train Buckling Abstract In order to prevent the track buckling in the hot summer and ensure the safety of the running train, as a part of the safety con-trol plan for high-speed railway, the train speed restriction according to the rail temperature was introduced in 2004. However, the conceptual and theoretical background of train-speed restriction is unclear. In this paper, the buckling probability evaluation pro-gram(ProCWR) developed by this researchers was improved to take maximum and minimum buckling temperature into account for the calculation of allowable temperature. From the theoretical background of the international research and the buckling probability considering domestic railroad conditions, the validity and reliability of Korean high-speed train speed reduction scheme were investigated.