The work is currently underway at Ponneri- Kavarappettai railway stations of Chennai Division after 12-13 coaches of Mysuru-Darbhanga Express were derailed upon colliding with a stationary goods train, on October 10 at 8:30 pm. Mysuru-Darbhanga Bagmati Express, departed from Dr MGR Chennai Central Railway station at 4:45 am.Train No. 12578 Mysore darbhanga express train was speeding at 75 kmph, when it entered the loop line and collided with the rear of the goods train standing at the same line.

