dullavcherra silchar fast passenger is a passenger train belonging to northeast frontier railway zone of indian railways that runs between dullavcherra & second largest city of assam, silchar. it is currently being operated with 55687/55688 train numbers on tri-weekly basis. it shares its rakes with 55689/dullavcherra–badarpur passenger. it makes its main halt at karimganj junction for 25 minutes & loco/rake reversals also takes place here. the train runs with sguj/wdp-4d & sguj/wdg-4.