Analysis of High Speed Railroad Infrastructure to increase Scheduled Speed

In Railroad, the improvement of scheduled speed make Korea Railroad have a competitiveness by reducing running time and raising traffic efficiency, and advanced foreign railroad administrations including Korea are continuously pushing ahead with technical development for the improvement. In this study, the influence factors, which make effects on the scheduled speed, were examined in 2 areas in order to improve the scheduled speed of domestic high-speed trains. Improvement for infrastructure has been analyzed by reviewing speed advancement with continuous transition curves on curved passing tracks, and by reviewing the scheduled speed through the analysis of slowdown during long-distance upward gradient running, and finally by considering the effects on the scheduled speed according to in-fill balise installation.