A psychological approach to enforcing quarantine is necessary. We need to look at the long game. Shaming & reprimanding people will work in short term, but people will, inevitably, become irritated and angry. You don't want that. Instead, create more space for them to be outside.

If we want social/physical distancing to be sustainable, we need to acknowledge the psychological toll of being stuck at home. We need to positively frame desirable behaviour. In the age of social media, I'm legitimately worried about what happens when people collectively snap.

Trust me. I'm an optimist. But, I've also seen what social isolation can do to people (I worked in community mental health as an occupational therapist). We need to be strategic about the approach we take. I don't think an authoritative/punitive stance is good for the long haul.

Tell people you understand the challenges they face. Validate their experience. Show them you care by opening streets up for people to walk, roll & cycle. I suspect this will yield better results. I think it can keep people in better spirits and help ensure compliance with rules.

If you want to see how asking people to follow the law/ fining them for breaking it pans out, look at how it works to deter speeding drivers. It doesn't. People still speed. Know what does work? Using design to encourage desired behaviour. This is relevant to social distancing.