As of April 1, 2019, the total length of standard-improved roads in the Tokyo metropolis, Japan, was thousand kilometers approximately. They covered an area of roughly * square kilometers. Their total length had been steadily increasing throughout the last ten years.
In contrast, unimproved roads added up to around **** thousand kilometers and had been continuously decreasing in length and area.
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Tokyo Metropolitan Government. (June 1, 2020). Length of standard-improved roads in Tokyo metropolis, Japan, from 2010 to 2019 (in 1,000 kilometers) [Graph]. In ÌÇÐÄÆÆ½â°æ. Retrieved July 27, 2026, from /statistics/1179565/japan-tokyo-standard-improved-road-length/
Tokyo Metropolitan Government. "Length of standard-improved roads in Tokyo metropolis, Japan, from 2010 to 2019 (in 1,000 kilometers)." Chart. June 1, 2020. ÌÇÐÄÆÆ½â°æ. Accessed July 27, 2026. /statistics/1179565/japan-tokyo-standard-improved-road-length/
Tokyo Metropolitan Government. (2020). Length of standard-improved roads in Tokyo metropolis, Japan, from 2010 to 2019 (in 1,000 kilometers). ÌÇÐÄÆÆ½â°æ. ÌÇÐÄÆÆ½â°æ Inc.. Accessed: July 27, 2026. /statistics/1179565/japan-tokyo-standard-improved-road-length/
Tokyo Metropolitan Government. "Length of Standard-improved Roads in Tokyo Metropolis, Japan, from 2010 to 2019 (in 1,000 Kilometers)." ÌÇÐÄÆÆ½â°æ, ÌÇÐÄÆÆ½â°æ Inc., 1 Jun 2020, /statistics/1179565/japan-tokyo-standard-improved-road-length/
Tokyo Metropolitan Government, Length of standard-improved roads in Tokyo metropolis, Japan, from 2010 to 2019 (in 1,000 kilometers) ÌÇÐÄÆÆ½â°æ, /statistics/1179565/japan-tokyo-standard-improved-road-length/ (last visited July 27, 2026)
Length of standard-improved roads in Tokyo metropolis, Japan, from 2010 to 2019 (in 1,000 kilometers) [Graph], Tokyo Metropolitan Government, June 1, 2020. [Online]. Available: /statistics/1179565/japan-tokyo-standard-improved-road-length/