measured from 7 a.m. to 7 p.m.; each direction calculated separately
Supplementary notes
Figures represent the amount of time lost by traffic participants throughout the year due to congestion.
Junctions are abbreviated as 'JCT' and interchanges as 'IC'.
In 2019, the highest-congested national expressway section in Japan was on the Tomei Expressway from Ebina Junction to Yokohama-Machida Interchange, where the loss of time was estimated at approximately **** million person-hours throughout the year. Tomei is the Japanese reading of the acronym built with the initial characters for the two highly-populated urban areas Tokyo and Nagoya, which the roughly 350km long expressway connects along the east coast.
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MLIT (Japan). (June 8, 2020). National expressway sections with the highest congestion in Japan in 2019 (in 1,000 person-hours) [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 25, 2026, from /statistics/1228497/japan-busiest-national-expressways/
MLIT (Japan). "National expressway sections with the highest congestion in Japan in 2019 (in 1,000 person-hours)." Chart. June 8, 2020. ÌÇÐÄÆƽâ°æ. Accessed July 25, 2026. /statistics/1228497/japan-busiest-national-expressways/
MLIT (Japan). (2020). National expressway sections with the highest congestion in Japan in 2019 (in 1,000 person-hours). ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 25, 2026. /statistics/1228497/japan-busiest-national-expressways/
MLIT (Japan). "National Expressway Sections with The Highest Congestion in Japan in 2019 (in 1,000 Person-hours)." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 8 Jun 2020, /statistics/1228497/japan-busiest-national-expressways/
MLIT (Japan), National expressway sections with the highest congestion in Japan in 2019 (in 1,000 person-hours) ÌÇÐÄÆƽâ°æ, /statistics/1228497/japan-busiest-national-expressways/ (last visited July 25, 2026)
National expressway sections with the highest congestion in Japan in 2019 (in 1,000 person-hours) [Graph], MLIT (Japan), June 8, 2020. [Online]. Available: /statistics/1228497/japan-busiest-national-expressways/
