Societatea de Transport București

"RATB" redirects here. For the former agency of the United States federal government, see Recovery Accountability and Transparency Board. For Paris public transport company, see RATP Group.

Societatea de Transport București (STB)
STB logo (2018)
Overview
Owner	Municipality of Bucharest
Locale	Bucharest, Romania
Transit type	Bus Trolleybus Light rail Tram
Number of lines	138 bus routes 15 trolleybus routes 23 light rail and tram routes
Number of stations	2,465
Daily ridership	1.18 million individual rides (2019)
Annual ridership	1,138,000,000 (2023)
Chief executive	Daniel Istrate
Headquarters	Bulevardul Dinicu Golescu nr. 1, Sector 1, București
Website	www.stb.ro
Operation
Began operation	1909
Number of vehicles	1,147 buses, 297 trolleybuses, 486 trams and light rail vehicles
Technical
Track gauge	1,435 mm (4 ft 8+1⁄2 in)

Societatea de Transport București (stylized as STB; English: Bucharest Transport Company) is the main public transit operator in Bucharest, Romania, owned by the Municipality of Bucharest. From 1990 to 2018, the company had a different legal status and was known as the Regia Autonomă de Transport București (RATB).

STB operates under TPBI a complex network of buses, trolleybuses, light rail and trams.

In 2019, STB had an average of approximately 1,180,000 daily individual rides of which 540,000 with buses, 520,000 with light rail and trams, and 120,000 with trolleybuses.