SEMTUR is a government-owned corporation

Government-owned corporation

A government-owned corporation, state-owned company, state-owned entity, state enterprise, publicly owned corporation, government business enterprise, or parastatal is a legal entity created by a government to undertake commercial activities on behalf of an owner government...

 based in Rosario

Rosario

Rosario is the largest city in the province of Santa Fe, Argentina. It is located northwest of Buenos Aires, on the western shore of the Paraná River and has 1,159,004 residents as of the ....

, province

Provinces of Argentina

Argentina is subdivided into twenty-three provinces and one autonomous city...

 of Santa Fe

Santa Fe Province

The Invincible Province of Santa Fe, in Spanish Provincia Invencible de Santa Fe , is a province of Argentina, located in the center-east of the country. Neighboring provinces are from the north clockwise Chaco , Corrientes, Entre Ríos, Buenos Aires, Córdoba, and Santiago del Estero...

, Argentina

Argentina

Argentina , officially the Argentine Republic , is the second largest country in South America by land area, after Brazil. It is constituted as a federation of 23 provinces and an autonomous city, Buenos Aires...

. It is managed by the municipality of Rosario

Government of Rosario

This article is about the government of Rosario, the third most populated city in Argentina, and the largest in the province of Santa Fe. Rosario has about 910,000 inhabitants and is located on the western shore of the Paraná River....

 and runs a number of urban bus

Bus

A bus is a road vehicle designed to carry passengers. Buses can have a capacity as high as 300 passengers. The most common type of bus is the single-decker bus, with larger loads carried by double-decker buses and articulated buses, and smaller loads carried by midibuses and minibuses; coaches are...

 lines, including the Rosario trolleybus system

Trolleybuses in Rosario

The Rosario trolleybus system is part of the public transport network in Rosario, the largest city in the province of Santa Fe, Argentina.Opened in 1959, the system presently comprises one line, designated as line K.-Early years:...

.
SEMTUR was created in 2002, after a private company which ran five bus lines got its authorization revoked due to deficient service. Though concessions for some of the lines were acquired by other companies, the other bids were left deserted. SEMTUR took over these and started renewing their fleet. This also had the effect of raising the standards for the competition.

, the company manages twelve regular bus lines (designed by the numbers 113, 116, 120, 121, 122, 123, 133, 134, 135, 136, 137 and Ronda del Centro), two intra-district lines (Enlace Noroeste and Enlace Sur), a special summer-season line to serve the northern coast and beaches of the city (Línea de la Costa), and a trolleybus line (Line "K").
SEMTUR's buses employ a light gray and orange horizontal colour pattern.