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Length of road tunnels in Japan 2010-2018

This statistic presents the length of road tunnels in Japan from 2010 to 2018. In 2018, the length of road tunnels stretching over Japan amounted to approximately 4.59 thousand kilometers, an increase from around 3.73 thousand kilometers in 2010.

Length of road tunnels in Japan from 2010 to 2018

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Sources

Release date

November 2020

Region

Japan

Survey time period

2010 to 2018

Special properties

data as of April 1 of each stated year

Supplementary notes

Figures are 'real lengths'. According to the source, real length of roads refers to the length of roads minus duplicate length (duplicate sections), length not in service (sections for which no notification of commencement of service has been provided) and water length (sections on the sea, rivers, lakes or marshes where ferrying services are available).

Due to the Great East Japan Earthquake, figures for 2011 and 2012 partly include data for city, town and village roads as of April 1 of previous years.

Data prior to 2017 come from previous reports.

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