[2] In 2016, Chairman of Azerbaijan Railways Javid Gurbanov confirmed that work was underway on a 25 km (16 mi) railway line to Heydar Aliyev International Airport from Baku's main station.

[3] In 2018, president Ilham Aliyev announced funding for a suburban rail service for Baku.

[4] The 100 million manat project was to include upgrading the existing railway between Baku and Sumqayıt via Biləcəri, as well as bring back into use the disused route connecting the two cities via Sabunçu and Pirşağı.

[8] Future The first Elektrichka ran on July 6, 1926, along the Baku–Sabunchi line in Soviet Azerbaijan.

13 more stations are planned toward to the East, including Baku International Airport.