In Rules for Using the Sidewalk During the Coronavirus, Eleanor Barkhorn on the new rules of social distancing:

And when walking in a group (only people in your household, please!), be ready to shift to single file quickly. It’s lovely that this moment of schools and offices being closed allows us to spend more time with the people we live with — including going on walks together. But our habits for walking in groups need to change. It’s impossible to stay six feet away from a group walking side by side on a sidewalk or even a broader walking path. The only way to stay safe is for the group to walk in single file when someone is approaching.

Don’t ride your bike on the sidewalk. This is an often-ignored law in many cities, but at this moment it becomes essential to follow. There is simply no way to stay six feet away from a cyclist sharing a sidewalk — bikes take up a lot more space than pedestrians, runners or even people on scooters. Cyclists must ride in bike lanes, or stay on wider paths.

I think Beacon needs to put up more signs telling people to not ride bikes on the sidewalks, especially now.