As of March 31, 2022, Hokkaido was the Japanese Prefecture with the highest accumulated length of tunnels, amounting to approximately 364.85 kilometers. Overall, road tunnels in Japan added up to over five thousand kilometers at the time.
Length of road tunnels in Japan as of March 2022, by prefecture
(in kilometers)
Characteristic
Length of tunnels in kilometers
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MLIT (Japan). (March 22, 2024). Length of road tunnels in Japan as of March 2022, by prefecture (in kilometers) [Graph]. In Statista. Retrieved July 22, 2024, from https://www.statista.com/statistics/1229150/japan-tunnel-length-by-prefecture/
MLIT (Japan). "Length of road tunnels in Japan as of March 2022, by prefecture (in kilometers)." Chart. March 22, 2024. Statista. Accessed July 22, 2024. https://www.statista.com/statistics/1229150/japan-tunnel-length-by-prefecture/
MLIT (Japan). (2024). Length of road tunnels in Japan as of March 2022, by prefecture (in kilometers). Statista. Statista Inc.. Accessed: July 22, 2024. https://www.statista.com/statistics/1229150/japan-tunnel-length-by-prefecture/
MLIT (Japan). "Length of Road Tunnels in Japan as of March 2022, by Prefecture (in Kilometers)." Statista, Statista Inc., 22 Mar 2024, https://www.statista.com/statistics/1229150/japan-tunnel-length-by-prefecture/
MLIT (Japan), Length of road tunnels in Japan as of March 2022, by prefecture (in kilometers) Statista, https://www.statista.com/statistics/1229150/japan-tunnel-length-by-prefecture/ (last visited July 22, 2024)
Length of road tunnels in Japan as of March 2022, by prefecture (in kilometers) [Graph], MLIT (Japan), March 22, 2024. [Online]. Available: https://www.statista.com/statistics/1229150/japan-tunnel-length-by-prefecture/