Section 18.60.690 - Nonapplicability to certain activitiesAS 18.60.670 - 18.60.695 do not apply to
(1) activities relating to high voltage overhead conductors or their supporting structures conducted by persons authorized by the operator or owner of high voltage overhead conductors or their supporting structures;(2) work done on telephone or communication circuits or their supporting structures;(3) the operation or maintenance of equipment traveling or moving upon fixed rails of a railroad; or(4) emergency situations in which life is endangered.