The FCC requires warning signs, but somehow the utility companies must have forgotten to install them. Thank goodness, we have these dedicated, concerned citizens to help out.
From FCC Website: WHAT IS THE FCC’S POLICY ON RADIOFREQUENCY WARNING SIGNS?
Radiofrequency warning or “alerting” signs should be used to provide information on the presence of RF radiation or to control exposure to RF radiation within a given area. . . Meaningful information should be placed on the sign advising affected persons of: (1) the nature of the potential hazard (i.e., high RF fields), (2) how to avoid the potential hazard, and (3) whom to contact for additional information. . . . Signs should be located prominently in areas that will be readily seen by those persons who may have access to an area where high RF fields are present.