Dhaka, Oct. 28 -- Beating global experience of once in 20 years, mishaps occurred twice over a year in Dhaka metro rail that raised doubts about the construction and safety qualities of the popular mass transport.

Experts are raising questions over not only design or construction faults but also deploring a shocking lack of proper maintenance and safety since its launch three years ago.

According to metro-rail experts, officials and consultants, operation of the Mass Rapid Transit line 6 (MRT 6) was launched on December 30, 2022 sans safety-clearance certification, and its regular safety audit was not conducted during the last three years ignoring the Metro Rail Act.

They also blame the authorities concerned for not appointing a third-...