The first plans for a rapid-transit system date to the 1930s, with the adoption of a new general plan for city development. After World War II, the population passed the one million mark.
A requirement of Soviet law for construction of a metro system. In 1947, the Soviet Cabinet of Ministers issued a decree authorizing its construction, which began in 1951.
On November 6, 1967, Baku Metro became the Soviet Union’s fifth rapid-transit system when the first 6.5 kilometers of track and a depot were inaugurated, in honor of the fiftieth anniversary of the October Revolution.
The underground system operates between 7:30-23:50.