"Coronavirus update: SF Bay Area officials order nearly 7 million people to 'shelter in place'...You will still be able to walk your dog or go on a hike alone, or with someone you live with, or even with another person as long as you keep six feet between you," San Francisco health officer Dr. Grant Colfax said at a news briefing."
https://www.cnbc.com/2020/03/16/san-francisco-orders-residents-to-stay-inside-except-for-essential-needs.html