> Because of the sudden surge in demand for medical oxygen, currently most of the industrial oxygen in India is undergoing an additional purification step, and then being diverted for medical use. A major challenge is getting this oxygen from factories in eastern and southern states to the northern and western states which are most struggling with supply. It takes hours to fill a tanker with the highly flammable liquid oxygen, and once on the road, these vehicles must follow a strict speed limit of no more than 25 mph as well as not travelling at night, to avoid road accidents.
https://www.gavi.org/vaccineswork/why-indian-hospitals-are-r...
(Readers who paid attention in school may recall oxygen isn't actually flammable - but it does considerably increase fire risks)