Western Railway (WR) authorities are hoping to start the air-conditioned electrical multiple unit (EMU) rake from this Diwali. File Pic

Mumbai's first air-conditioned electrical multiple unit (EMU) rake has finally made its way to the Western Railway (WR), but unfortunately, the services won't be able during monsoon. General manager of WR, AK Gupta, who was among the first few engineers to initiate the project, said that trials would be carried out for the next four months.