| QR 2010 Vol.51 No.4 | 
| PAPERS  | 
| Vibration Suppression in Catenary Poles Using Viscoelastic Dampers | ||
| M.ABOSHI, M.TSUNEMOTO | ||
| Applicability of Rain Flow Method to Fatigue Life Span Estimation of Overhead Contact Wire | ||
| A.SUGAHARA, C.YAMASHITA, T.USUKI | ||
| Practical Application of a New Feeding Transformer for AC Electric Railway Substations | ||
| H.MORIMOTO, T.UZUKA, T.YAMAMOTO, T.AKITA | ||
| Development of New Type Automatic Train Protection ATS-Dx with Permissible Speed Profile Using On-board Database | ||
| H.FUJITA, H.ARAI, K.SATO | ||
| Application of GPS to Train Control Systems for Secondary Lines | ||
| H.YAMAMOTO, T.SASAKI, H.SUGAHARA | ||
| Risk Evaluation Method for Improvement of Railway Signalling Systems | ||
| K.IWATA, I.WATANABE | ||
| Upgrading Pantograph Performance Using Variable Stiffness Devices | ||
| Y.YAMASHITA, M.IKEDA | ||
| Aerodynamic Noise Reduction in Pantographs by Shape-smoothing of the Panhead and Its Support and by Use of Porous Material in Surface Coverings | ||
| M.IKEDA, T.MITSUMOJI, T.SUEKI, T.TAKAISHI | ||
| Load Transmission Characteristic to Ballast Layer Focused on Deformation Mode of Sleeper | ||
| F.URAKAWA, A.AIKAWA, A.NAMURA | ||
| EDITORIAL NOTE | 
| Dear Readers, | ||
|  | H.NAKAMURA | |
| SUMMARIES | |
| Summaries of RTRI REPORT (in Japanese) | |
| ANNUAL CONTENTS | |
| Annual Contents: Subjects Vol.51, No.1-No.4 (2010) | |
| ANNUAL INDEX | |
| Annual Index: Subjects Vol.51, No.1-No.4 (2010) | |