LUCKNOW : Keeping in mind the safety of commuters amidst the COVID-19 pandemic, the Uttar Pradesh Metro Rail Corporation (UPMRC) has revised its operational framework to meet the highest standards of health and hygiene.The revamped guidelines extend to every outlet and encompass check-in procedures, station premises and surveillance systems, he said, adding that Lucknow Metro will follow normal timings of operation -- 6 am to 10 pm -- when services resume on September 7."Lucknow Metro has adopted the highest level of hygiene and safety measures for the well-being of commuters and it is the safest way to travel," UPMRC MD Kumar Keshav said.Keshav said special emphasis is being laid on mopping and cleanliness inside the Metro premises.Signage.