Overview
Trains run through onto the Tokyu Corporation's Meguro Line for Hiyoshi and the Saitama Railway's Saitama Rapid Railway Line for Urawa-Misono. The portion between Shirokane-Takanawa and Meguro is shared with the Tokyo Metropolitan Bureau of Transportation (Toei) Mita Line.
The right-of-way and stations between Shirokane-Takanawa and Meguro are shared with the Toei Mita Line. Under an agreement between Tokyo Metro and the Tokyo Metropolitan Government, the fare for this section is calculated on the Toei fare system for passengers traveling to stations on the Mita Line past Shirokane-Takanawa, on the Metro fare system for passengers traveling to stations on the Namboku Line past Shirokane-Takanawa, and on the system "most beneficial to the passenger" (presently the Metro schedule) for travel solely on the shared sector.
On maps, diagrams and signboards, the Namboku Line is shown using the color "emerald" (▉), and its stations are given numbers using the letter "N".
Read more about this topic: Tokyo Metro Namboku Line