This research is part of the development system, which aims to detect damage railway tracks using CLAHE-KNN model. study CLAHE-K-NN method and determine effect CLAHE on K-Nearest Neighbor algorithm for detection. defined by Block Size (BS) Clip Limit (CL). The dataset used in this was imagery totaling 384 data. Based KNN method's experimental results, obtained an accuracy 65.62%. In addition, r...

In the United States, railways are the major means to trans-continentally move goods from ports to the various inland destinations. Due to mergers and abandonment of rail lines, there has been a reduction in the track capacity, concentrating rail traffic to fewer lines. In addition to this, booming trade with Pacific Rim nations has seen the annual trade in the Ports of Los Angeles and Long Bea...

This paper presents a case study for symbolic model checking (SMC) with Propositional Projection Temporal Logic (PPTL). First, PPTL is briefly introduced. Then an outline of symbolic model checking algorithm for PPTL proposed in [21] is presented. As a case study, a single-track railroad crossing control system (STRCCS) is employed to illustrate how SMC for PPTL can be utilized in the specifica...

Since the mid-1990s, the U.S. Department of Transportation (U.S. DOT) Federal Railroad Administration (FRA) has sponsored a research program on alternative detection technologies for railroad right-of-way (ROW) and highway-rail grade crossing applications. In support of this effort, the John A. Volpe National Transportation Systems Center (Volpe Center) of the U.S. DOT Research and Innovative T...

Abstract: the article provides a calculation justification of proposed railway structure on reinforced concrete sleeper-free base, for which an analysis existing methodology calculating track strength is carried out, according to dynamic loads acting from rolling stock are determined. The applied sleeper-less structures and results measurements emerging stresses in substructure, measured depth ...