The construction of Tbilisi Metro began in 1952 and the first line section with six stations (four underground and two overground stations) was inaugurated on January 11, 1966. 
The southern extension of the line with 3 stations opened on November 7, 1967. After that, the line was extended to the east featuring two new stations.
On September 14, 1979, a new line with five underground stations was inaugurated. It was later named Saburtalo Line.
The northern extension of the first line (two stations) came into passenger service on November 7, 1985. Another underground station opened on December 9, 1985 in the eastern part of the line and finally, two more stations came into service in the northern part of the line on January 15, 1989.
Akhmeteli–Varketili Line is 20,4 km long and it features 14 underground and 2 overground stations.
After the collapse of the Soviet Union Georgia gained independence and a new era began.
It was only on April 3, 2000 that one new station came into service at Saburtalo Line.
The line currently features 6 underground stations on 6,7 km of tracks.
Thus, Tbilisi Metro consists of two lines and 22 stations (of them 20 stations are underground) and 27,1 km of track. There is one interchange station which brings together two stations.
In 1990-ies, 11 stations of Tbilisi Metro were renamed:
In 1990-ies, 11 stations of Tbilisi Metro were renamed:
Signaling Department
Power Supply Department
Track and Tunneling Department
Electrical Mecanical Department
Installation of Altivar-61 frequency converters. They enable a smooth start and a partial load mode of asynchronous motors.
Nadzaladevi Depot
Modernisation of train washing facilities (replacement of electric brushes, special washing liquid is used).
Gldani Depot
Modernisation of 11 cars.
Signaling Department
Power Supply Department
Track and Tunneling Department
Electrical Mecanical Department
Installation of Altivar-61 frequency converters. They enable a smooth start and a partial load mode of asynchronous motors. Renovation of escalator control panels.
Gldani Depot
Rolling stock modernisation.
Tbilisi Metro development prospects by 2020:
| Key Performance Indicators, 2012 | |
| Total operational length (two tracks), km | 27,1 |
| Number of lines | 2 |
| Number of stations | 22 |
| including number of stations with one exit | 16 |
| Metro system density (sq.km per city km.) | 0,11 |
| Number of pairs of trains per hour | 16 |
| Minimum headway, sec | 210 |
| Fulfilment of train schedule, % | 99,8 |
| Inventory rolling stock, cars | 195 |
| Rolling stock in operation, cars | 156 |
| Total car/km, mio. | 15,4 |
| Number of depots | 2 |
| Average operational train speed, km/h. | 45 |
| Average train speed, km/h. | 38 |
| Power consumption, mio. kWh | 64,2 |
| including power for train traction, mio. kWh | 36,2 |
| Specific energy consumption for traction, Wh per t/km | 68,3 |
| Number of substations | 24 |
| Length of power cable systems, km | 900 |
| Number of escalators in operation | 59 |
| Number of stations with escalators | 18 |
| Length of lines equipped with speed control systems, km., including: | 27,1 |
| as a main signaling system, km. | 7 |
| with seamless track circuit, km. | - |
| Number of switches | 84 |
| Number of ventilation shafts in operation | 28 |
| Number of ventilators in operation | 63 |
| Number of water drainage installations | 42 |
| Operational length of tunnels, km. | 53,1 |
| Staff responsible for operations, pers. | 2270 |
| Total ridership, mio. pax. | 93,6 |
| Average daily ridership, mio. pax. | 0,26 |
| Cost of transportation of 1 passenger, rub. | 10 |
| Modal share, % | 38,4 |
Website: http://ttc.com.ge
address: 0112 Ave. Tbilisi, Station Square, № 2
Phone: (+995 32) 235-77-77
Fax: (+995 32) 293-41-41
Hot line: (+995 32) 293-44-44
E-mail: pr@metro.ge