The snag led to bunching of trains, the official said.
"The view and control of the signalling and Automatic Train Control system on Blue Line (Dwarka Sec-21 to Noida City Centre/Vaishali) at Operations Control Centre (OCC) was intermittently getting lost today between Karol Bagh and Dwarka section," the official said.
As a result, trains were being locally controlled as and when such view loss was happening, resulting into "intermittent bunching/hold up of trains for brief spells".
"Between 3:00 to 3:30 pm, the loss of view was for the entire Blue Line, which created bunching on overall line, before being restored again at 3:30 pm. The intermittent issue was resolved at 4:23 pm and since then train services are running normal on entire Blue Line," he said.
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)