Crime prevention through environmental design (CPTED) is a multi-disciplinary approach to deterring criminal behavior through environmental design.
CPTED strategies rely upon the ability to influence offender decisions
that precede criminal acts. As of 2012, most implementations of CPTED
occur solely within the built environment.
By changing the areas we reside in to deter criminals from committing
acts in our communities is the main goal of CPTED. Urban design and the
planning that goes in to the creation of new and reformation of older
communities, citizens in these neighborhoods and places of business can
feel safer at all hours.
Source: http://en.wikipedia.org/wiki/Crime_prevention_through_environmental_design