The following types of areas or facilities often are required by law to be fenced in with commercial fence, for safety and security reasons:
- Facilities with open high-voltage equipment (transformer stations, mast radiators). Transformer stations are usually surrounded with barbed-wire fences. Around mast radiators, wooden fences are used to avoid the problem of eddy currents.
- Railroad Tracks
- Fixed machinery with dangerous mobile parts (for example at merry go rounds on entertainment parks)
- Explosive factories and quarry stores
- Most industrial plants
- Airfields and Airports
- Military Areas
- Prisons
- Construction sites
- Zoos and Wildlife Parks
- Pastures containing male breeding animals, notably bulls and stallions
- Open-air areas that charge an entry fee
- Amusement equipment which may pose danger for passers-by
- Domestic swimming and spa pools