A restriction more often used in natural disasters, or to quell unrest, has never been tested against a pathogen like the virus.

https://www.nytimes.com/2021/01/23/health/coronavirus-curfews.html?pageType=LegacyCollection&collectionName=Coronavirus+Markets&label=Coronavirus+Markets&module=hub_Band&region=inline&template=storyline_band_recirc