The Rainbow BRTS project is being implemented with the financial support of Jawaharlal Nehru National Urban Renewal Mission (JnNURM) of the Government of India.

[1] Pune was the second city in India to experiment with a bus rapid transit system, after Ahmedabad, which opened the nation's first BRT in 2010.

The Hadapsar-Katraj pilot project consisted of 16.5 kilometres (10.3 mi) of bus lanes along the Pune Satara Road using airconditioned, low-floor more than 500 Volvo B7RLE buses initially on Katraj - Swargate - Hadapsar.

The funding for the project came from the Government of India under the Jawaharlal Nehru National Urban Renewal Mission.

[4] In September 2009 difficulties procuring the 650 buses required to run on the system had led to the project being indefinitely postponed.

The new bus shelters were sited on the wrong side of the road, leading to delays in their construction, while passenger information systems had yet to be installed.

[10] Feeder bus routes or regular services are run by PMPML from various locations in the city up to the BRT corridors.

A pilot system was constructed on the Katraj - Swargate - Hadapsar corridor and operations began in December 2006.

The infrastructure components included widening of roads, construction of footpaths and cycle tracks, laying of municipal services like water supply and drainage lines, utility ducts, construction of BRT lane‐segregators, bus stops, installation of Passenger Information System, etc.