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A number of options are available when considering the use of physical barriers to restrict access,
namely:
 Rooftop access controls: This may include a locked ladder or rooftop door with permission
required and information available for persons requiring access to the rooftop.

 Physical barriers: Non‐metallic screens, fences or chains can be used to indicate areas that
should not be entered by members of the public.

In some cases, painted lines may also be used to indicate compliance boundaries. However, their
effectiveness depends on the awareness that exists among the persons that may access the area.
The building owner is often provided with information on how to arrange access for persons, such
as maintenance personnel, who may need to work in areas close to or in front of the antennas.

7.5 Signage
In general, signage requirements should be appropriate for the technical parameters of the wireless
equipment/antenna and the accessibility of the site.
Low power installations where the compliance zone is within the equipment will generally not
require signage.

For other installations, signs should be placed near the compliance zone boundaries. The IEEE
Recommended Practice for Radio Frequency Safety Programs, 3 kHz to 300 GHz, provides guidance
on the installation of signs (C95.7‐2005). Depending on the region, RF‐EMF safety signs may require
multiple languages to ensure understanding. Some examples of signs and where they may be used
are provided in Table 3.

622 ITU‐T's Technical Reports and Specifications