Tokyo’s Marunouchi Line is one of Japan’s oldest and busiest subway routes, linking major commercial and governmental districts through a network that dates back to 1954. This view shows the Series 2000 rolling stock, a modernized fleet introduced by Tokyo Metro beginning in 2019 to replace aging Series 02 cars.

The trains feature energy-efficient LED lighting, regenerative braking, and improved accessibility through wider doorways and level boarding. Their bright yellow exterior, trimmed with red and blue stripes, preserves the line’s traditional color while emphasizing the sleek, minimalist design typical of contemporary Japanese transit engineering.

Inside, the cabin layout prioritizes capacity and passenger flow, with longitudinal bench seating covered in patterned orange upholstery and overhead digital route displays in both Japanese and English. The Marunouchi Line operates on a 1,500 V DC overhead catenary and runs entirely underground except for a brief surface section near Nakano-Sakaue, connecting Ikebukuro to Ogikubo over a 24.2-kilometer route that handles hundreds of thousands of passengers daily.

Tokyo Metro Marunouchi Line Series 2000 Train Interior, Japan

Tokyo’s Marunouchi Line is one of Japan’s oldest and busiest subway routes, linking major commercial and governmental districts through a…