They may not seem like culprits to you but objects such as coins, marbles and empty gutkha pouches lead to delay in Metro schedule.
According to Delhi Metro officials, these foreign objects often obstruct the closing of metro’s doors leading to delays.
The train will not move till all the doors are closed.
“Every day our cleaning staff removes empty and unopened gutkha pouches and other eatables, coins, chewing gum and marbles from the track of the doors,” said Rajkumar (he goes by only one name), director (operations), Delhi Metro Rail Corporations (DMRC).
“These objects do not allow the door to close automatically and the train operator has to manually close the door.”
On an average, he said, normal stoppage of a train at a station is 20 seconds.
“But it takes between one to three minutes for a train operator to notice the error, run down to that particular door, close it and get the train moving.”
DMRC officials said passengers leaning near the door of a crowded train often slip such objects wherever they find some opening or the space between the two panels of the door.
Though eatables are not allowed on the metro, commuters are often seen eating inside the moving train and littering.
Senior DMRC officials blame these objects as one of the biggest reasons for trains stopping at a station for more than the scheduled stoppage time and getting delayed.
But it is not just Indian metro that faces such problems.
“In the Singapore metro the commuters stuck chewing gums on the doors, leading to similar problem and delays. They finally had to ban chewing gum on metro,” Rajkumar said.
This problem is most common on the Delhi metro’s Yamuna Bank-Dwarka Sector 9 line as it is the most crowded section.
The instances of delays and slow movement of trains are most frequent on this section.
The 33.9-kilometre long corridor is the longest of the three operational metro lines. This most crowded section has 33 stations and ferry over 3.5 lakh passengers every day.
People standing between the doors or sticking their shoe to stop the door from closing so that their friends or family could also enter the train also leads to delay, a DMRC officials said.