No offense, but you seem to be a little confused. Policies, rules, regulations and laws that govern what a postal employee can and can not do while working for the postal service has no bearing on what a private citizen can and can't do. You can get shot for walking on someone's property no matter where the property is located. However, it is just as illegal for the property owner to murder me in Texas as it is for a property owner to murder you in Maryland. And when I say "I walk only on driveways and walkways. I do not cut across people's yards not even a little bit." I mean exactly that When I am out placing door hangers and I step onto someone's property, I walk only on driveways and walkways.