The passenger count surpassed five crore on December 21, 2021, and reached 6 crore on July 14, 2022.
A Vande Metro train covers a distance of 200 km on a one-way route.
It was found during the study at the spot that the rock is situated 10 meter below marshy water and the bottom part of the piles is not reaching up to the rock.
According to KMRL officials, advanced equipment would be needed to examine the foundation.
The KMRL, which confirmed a defect for the track in its preliminary inquiry, has now approached the Delhi Metro Rail Corporation with a request to conduct a detailed study.
The second phase comprises the stretch from Kaloor International stadium to Kakkanad Infopark.
In the beginning the facility will be provided only at six stations; Changampuzha Park, Palarivattom, South, Town Hall, Maharajas College and Elamkulam.
The MMRCL has defended tree felling by contending that it restricted only to a small area in Aarey Colony, and it is necessary to ensure a modern transport system for Mumbaikars.
The metro services extended out of the Kochi city area on September 4 and fares were reduced by half until September 18.
The cantilever bridge over the railway lines of Ernakulam South Railway Station and the metro track above the Vytilla overbridge are the most crucial parts of the metro construction.