Yet another example of "if you you wear the right outfit you can get away with anything"
No one suspects a guy in a high vis vest to be just some guy
No one suspects a guy in a high vis vest to be just some guy
If you look scruffy-ish, carry a large ring of keys on your hip, walk fast as if you know exactly where you're going and are pissed off that you have to go there, then you could walk around anywhere without being challenged. Most people won't even register that they saw you.
In the USA, not the rest of the world. Making that distinction because the high visibility vest trick will also work in most other (western?) countries.