Mayor Muriel Bowser signed an executive order Wednesday requiring masks to be worn when outside the house, with limited exceptions.

The order requires residents to wear masks when leaving their homes and likely to come within less than six feet of another person for more than a “fleeting moment.” Those who are eating, drinking, engaging in “vigorous” exercise” or two years or younger are exempt from the rule, according to the order.

“Basically what it says is, if you leave home you should wear a mask,” Bowser said at a press conference Wednesday. “This means if you’re waiting for a bus, you must have on a mask. If you are ordering food at a restaurant, you must have on a mask. If you’re sitting in a cubicle in an open office, you must have on a mask.”

The order also provides exceptions for people working in an enclosed office space. Violators can be fined up to $1,000, the order states.

The D.C. region has seen an uptick in coronavirus cases in recent weeks, with 11,529 confirmed cases in D.C., according to data compiled by Johns Hopkins University.