Soon, passengers on outstation trains will be able to breathe easier in the knowledge that even though the same air is circulating in their AC coach, at least it is being purified by hard-working robots. Western Railway (WR) has become the first railway network in India to get robots for this job.

Clearing the air
The closed loop of air conditioning often results in contaminated air continuously circulating in small spaces, leading to infections or other health issues. WR officials said that as per environmental guidelines, indoor air quality can have long-term effects on health.