"Whether we like to admit it or not, we avoid certain parts of the city — especially on foot, especially at night and especially if we are carrying something valuable. When friends visit, particularly women, we advise them on safer routes or offer to pick them up in a car if an area is dangerous. We keep an eye out when we move about the city, looking for signs of trouble. This is called 'street smarts,' and it is practiced not just by middle-class white folks but also by low-income residents, people of color and tough guys. Staying in one piece in many communities involves knowing which blocks to avoid."
This article (but even more, this topic) is a useful way way to discuss the experiential nature of place and that place meaning will differ from person to person. Given that, a one-size-fits-all application of geospatial technologies to navigate the urban environment is going to be problematic.
Via Ana Valdés