The first step made for the passenger public transportation in Constanța County was to put into service the tramcar in 1905-1906 on the Constanța-Techirghiol route, being able to transport 8 to 14 persons.
Once the Mamaia Resort was established in 1906, the seasonal railway line was put into service, which connected Constanța and Mamaia, carrying out a mixed transport, passenger transport by day and cargo transport by night.
Later, under the administration of Eng. Radu Stoika, the Constanța Transport Company, on 30 May 1920, inaugurates the first bus line for the Constanța-Techirghiol route.
In 1925, the city of Constanța is declared a municipality and had a population of 59164 inhabitants, containing Anadalchioi commune, Viile Noi, Palazu Mare and Brătianu neighbourhoods.
In 1935, the Passenger Transport Company called “Săgeata”, with the head office in Bucharest, wins the exclusive concession of public transportation in Constanța Municipality. In November 1943, tram carts are brought from Odessa, carts which were in circulation on the route Poșta Veche – Tomis Blvd. – Mamaia Blvd. – Military Hospital and round trip, until 1944, when they were withdrawn and sent back to Odessa.
In 1948, “Cooperativa Transportul Dobrogean” had 33 buses travelling on 5 routes and was subordinated to the People’s Council. In 1950, the public transportation activity is integrated in the Constanța Communal Enterprise. Starting with 1955, the first “Taxi” service is established, carried out by 10 “Pobeda” M20 cars.
In 1959, the first trolleybus line is put into service, having a length of 10.4 km, operated by Romanian TV2E trams.
In the same year, the public transportation unit is established, called I.T.C. Constanța.
At the end of 1969, I.T.C. Constanța operates 239 buses, 109 trolleybuses, 27 taximeter cars and 72 cargo transport and special motor vehicles.
In 1979, I.T.C. Constanța was transforming into Local Transport County Enterprise [*I.J.T.L.] of Constanța, taking over the motor vehicles from the units subordinated to the people’s Council of Constanța, in the same year being introduced the self-taxation in public transportation means.
On 1 January 1980, I.J.T.L. Constanța had 5300 employees and 1784 motor vehicles, of which 811 were serving the public transportation, 640 buses, 123 trolleybuses, 48 taximeter cars and 973 motor vehicles for cargo transport. In 1984, the first tram line is inaugurated on the route Train Station – Holliday Village, with a length of 11.8 km simple railway, served by 10 V3A-C double articulated trams.
1984 – 1986 other two tram lines are put into service totalling 27.5 km simple railway, as well as the tram garage with repair and maintenance halls. In 1990, I.J.T.L. Constanța is transformed into an Autonomous Enterprise and the activity of public transportation by taximeter cars and the activity of utility vehicles for cargo transport are divided, forming a separate agent.
A new line of public transportation by tram is put into service on 21 October 1996, with a length of 4.8 km simple railway (line 104).
During 2001-2004, 130 MAZ 103 buses are purchased with the support of the Local Council of Constanța Municipality, therefore starting the process of modernising the motor vehicles fleet.
Currently, the public transportation service is carried out on 22 routes with a total length of 268.6 km, with stops in 549 stations.
In 2007, with the support of the Local Council of Constanța Municipality, 10 AYATS double-decker buses, with Volvo engine, are purchased from Spain. They are used by the Constanta City Tour program, a summer program dedicated to tourists, but not only, reaching along the route to most of the historical and architectural objectives of the city of Constanța.
On 28 April 2007, the Constanța City Tour route is inaugurated, connecting the train station at the end of the Mamaia Resort, going through the historic centre of the city, this route being operated by the new double-decker buses. Subsequently, during the summer season, RATC is launching other two routes which purpose is to attract tourists for the Romanian seaside: Mamaia Estival and Litoral Estival, the latter going along the seashore up to Mangalia and back.