of bus routes in Colombo, many of which are operated by SLTB SLTB serves both urban and rural routes. In many rural areas, it provides services in unprofitable areas that would be unattractive to private operators.
Urban routes Colombo has an extensive public transport system based on
buses, some of which is operated by SLTB. The
Central Bus Stand in
Pettah functions as the primary hub for bus transport in Colombo. The road network in Colombo consists of radial links (or arterial routes), which link the city centre and district centres, and orbital links, which intersect the arterial routes; most bus routes run along the radial links without the benefit of dedicated bus lanes owing to the high volume of traffic at peak times. The newly introduced
Lanka Metro Transit is a bus rapid transit service introduced in the capital's metropolitan region in April 2026 in order to provide transportation under the 'Clean Sri Lanka' program and operated as a subsidiary of the SLTB. The system is part of wider efforts to reduce traffic congestion and encourage a shift from private to public transport in Colombo.
Intercity routes SLTB also serves many intercity routes. As of January 2012, SLTB is the only bus operator on the
Southern Expressway. It uses modern
Lanka Ashok Leyland buses on the expressway to connect
Galle with
Maharagama every two hours. As of 2013, the SLTB has started operating on the
Katunayake Expressway providing access for people from
Negombo,
Katunayake,
Puttalam, etc. These intercity routes can be classified into two main categories:
Inter-provincial services Inter-provincial services are mainly concentrated in the commercial capital of Colombo. Secondly, it is mostly active in Kandy, Kurunegala and other district cities. In addition, more inter-provincial services are concentrated in several other suburbs such as Panadura, Kataragama and Maharagama. Inter-provincial bus services often start in one city and extend to another urban or rural destination. Most inter-provincial services are Over 100 km intercity or rural long-distance services. However, inter-provincial services are also available along suburban and rural provincial boundaries with shorter destinations. 100 km More than inter-provincial general services often run as limited stops. The SLTB has the longest inter-provincial service in Kataragama - Jaffna. The Kataragama (administrative boundary belongs to the Uva Province) depot in the Southern Province can also be pointed out as the only SLTB depot covering all the provinces of Sri Lanka.
Intra-provincial services The commercial capital of Colombo is mainly centered on the internal services of the Western Province. These include urban services that extend to other cities within the Colombo District, as well as medium-distance intercity services to other urban (rural) destinations in the province (Kalutara, Gampaha). Internal provincial services with the longest routes operate in the Eastern and the Northern Provinces. Internal provincial long-distance services also operate as limited stops. == Fleet ==