In CPTED, natural surveillance focuses on what core principle?

• A. Extensive fencing to deter entry
• B. Good visibility to monitor surroundings
• C. High-speed patrols at night
• D. Alarm systems only

Answer: (B)

Natural surveillance centers on visibility and the ability for people to observe and be observed in a space. When design maximizes sightlines, reduces hiding spots, and ensures that open areas are clearly visible, ordinary users and residents can monitor activity and potential offenders are deterred by the higher likelihood of being noticed. This passive form of observation is the essence of natural surveillance, not relying on barriers, patrols, or alarms.

Extensive fencing focuses on keeping people out rather than enabling observation. High-speed patrols at night involve active enforcement rather than the design of the space to be watched. Alarm systems are reactive devices and do not create the continuous visibility that natural surveillance relies on.