Other bus operators such as Selangor Omnibus, MARA Liner and Causeway Link also serve the Klang Valley.

The buses run between four hubs at the edge of the central business district, namely KL Sentral, Titiwangsa, KLCC and Maluri, and Medan Pasar in the city centre.

These bus hubs also serve as rail interchanges, with the exception of Medan Pasar, although it is at a walking distance from Masjid Jamek LRT station.

At the other end, the trunk routes serve regional hubs where Local Shuttles fan out into the residential suburbs.

On 30 April 2006, the bus network in Area 3 covering Setapak, Ulu Kelang, Wangsa Maju, Keramat, Ampang and Pandan was revamped.

It covers areas including Cheras, Serdang, Kajang, Balakong, Putrajaya, Cyberjaya and Bandar Baru Bangi.

On 23 September 2006, Rapid Bus' revamp of the Klang Valley's bus network became complete with the introduction of new routes in Area Five which covers Subang Jaya, USJ, Puchong, and Petaling Jaya, Shah Alam and Klang south of the Federal Highway; and Area Six which covers Damansara, Bandar Utama, Kota Damansara and areas of Petaling Jaya, Shah Alam and Klang north of the Federal Highway.

Rapid Bus has also divided up the Klang Valley into six areas: Route numbers for the local shuttle are prefixed by the letter T (for Tempatan), e.g. T323.

Later all the prefix were demolished due to the revamping of the Land Public Transport Commission (SPAD) except the local shuttle T (Tempatan) services.

As part to expand the public transport connectivity and improve service efficiency, several new bus routes by Rapid KL were introduced with a limited trial run period.

As for trunk shuttle (UTAMA) bus route, the tickets will be issued based on the number of zones covered.

Spouse and a total of 4 youngsters under 15 years old are allowed to accompany the pass holder free on weekends and public holidays.

Effective 10 April 2019, all RapidKL buses is implementing full cashless journey for all routes by stages, in which the bus only accepts Touch n Go card only for user convenience.

Passengers can book the DRT service through the Kummute, Mobi or Trek Rides app with flexible timing and more selection of stops.

[10] In 2010, SPAD introduced the express transit system in Klang Valley, namely BET, where the buses utilize less congested highways to link between heavily populated areas and city centers in Kuala Lumpur, Putrajaya and Penang.

Until the end of trial, Rapid KL has decided to discontinue the service due to confusion with passengers and bus shortage.

In early December 2010, RapidKL introduced the very first 'Bas Wanita' services in Malaysia, which a bus will serve exclusively for ladies passengers only during morning and evening rush hours.

Like KTM Komuter's Ladies Coach, this service is intended to avoid sexual harassment on the fully loaded normal buses during rush hours.

In September 2019, Rapid KL re-introduced the minibus service to improve first-mile connectivity, especially for sharper and narrower routes.

[15] T300 is the first trial route to operate minibus service, using SKSBus E98 Midi-bodied Hino XZU high entry midibus leased from Kiffah Travel and Tours for 3 months.

Later on 15 September 2019, another route, T304 were put on trial, using Pioneer-bodied Hino XZU high entry midibus leased from Selangor Omnibus for 3 months.

Other depots include Batu Caves, Shah Alam, Depoh Presint 14 and Maluri exclusive for Rapid KL.