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truestar inc.  polyline  every year


This dataset is a polyline data for railway sections for analysis processed by truestar, based on the railway data from the MLIT National Land Numerical Information.

Sample Data


We hold polyline data for railroad sections nationwide so that there is one record per “operator type” & “operator company”. This dataset corresponds to “POINT_STATION_02 Japanese stations (without line names)”, and can be spacially joined and analyzed with other datasets deployed on the Snowflake Data Marketplace.

Since the “line name” in the original data published by the National Land Numerical Information may differ from the names commonly used and officially registered, it has been removed and processed in this dataset. If you need “line name”, please use “POLYLINE_RAILWAY_01 Japanese railway sections (with line names)”.

Data Fields



The data is prepared by truestar, based on the folloiwng data.
Digital National Land Information provided by MLIT

Special Notes

1. Regarding railway line names:

Mainly in JR, what is generally used as a line name is the operation system name. This name is different from the line name of the railway data published in the National Land Numerical Information, which requires careful consideration when being deployed. For example, the Yamanote line in fact includes 30 stations forming a ring shape such as Tokyo station and Shinbashi station, however only stations from Shinagawa to Tabata are registered (see the figure below). Other stations are registered on other lines, for instance Kanda station on Chuo line, Akihabara station on Soubu line, Ueno station on Touhoku line, etc., which is difficult to understand for average users.

Therefore, we have prepared two datasets, one that retains the line name (POLYLINE_RAILWAY_01) and one without the line name (POLYLINE_RAILWAY_02), so that you can choose the one that best suits your purpose of use.


When deploying both station and railway section data, please use either of the following combinations:





2. Regarding railway class

“RAILWAY_CLASS” is excluded from the railway section data because there are cases where “RAILWAY_CLASS” is different for each station. For example, the Chuo line of Line 4 of Osaka City Metro includes both track and ordinary rail in ” POINT_STATION_01″, but only ordinary track in the railroad section, resulting in inconsistencies due to RAILWAY_CLASS.


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