[2] In 2005, the World Bank published a study report, recommending that the government of Bangladesh build a mass transit system in Dhaka.

In the same year, American consultancy firm Louis Berger Group prepared a strategic transport plan for Dhaka.

[9] On 28 June 2022, a loan agreement of 71% of the total budget was signed between Bangladesh and Japan International Cooperation Agency (JICA) to finance the project.

On 17 April 2023, DMTCL stated that it intends to start its construction in July of the same year depending on the decision of the Board of Directors meeting scheduled the next day.

[11] On 23 May 2023, a contract worth ৳1,189 crore was signed by TOE Corporation and Spectra Engineers Limited with the metro authority for the construction of the depot.

[14] On 20 August 2023, Obaidul Quader, minister of Road Transport and Bridges, announced that the inauguration ceremony of the line's construction would happen on 16 September 2023.

While applying the no-objection letter, the army suggested revising the line to Nabinagar in the west and the army-developed Jolshiri Abashon in the east.