The court, which directed Delhi Metro Rail Corporation (DMRC) to "examine viability of having spittoons and dustbins on the stations", also queried it on whether drinking water and toilet facilities were easily available to commuters.
"Don't you have dustbins at airports and bus stations? Can you protect people by not having dustbins? This is a very myopic view of security," Justice Rajiv Shakdher said.
The court also directed DMRC to indicate on affidavit how many toilet and drinking water facilities are available at metro stations and whether the amenities are generally accessible to commuters.
The court also issued notice to Centre, city government and DMRC, seeking their replies by August 11, the next date of hearing.
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The orders and observations came on plea of Kush Kalra, a metro commuter who has sought directions to DMRC to provide safe drinking water, toilets and dustbin facilities to passengers of Delhi metro.
Advocate Kush Sharma, appearing for Kalra, argued in court "if a commuter was only travelling with a metro card and no money then he or she will not get a drop of water to drink at any of the stations for free" and alleged this was discrimination between those who have money and those who do not.