advice advising alert attached bolted communicating communication concern cracked cracks danger electric-power electricity electricity-supply energy equipment height high high-voltage information informing metal power power-supply raised red safety security shadows sign signage supply symbol symbolic voltage volts warning warning-sign white wording access-denied access-limited appropriate-behavior appropriate-behaviour behave behavior behaviour black caution cautious communicate directions fight flight keep-out keep-to-path no-access no-entry not-allowed not-permitted permission-denied prohibited prohibition restricted restriction restrictions bus bus-stop city long rails road street trailer transport transportation background business button call cell cellphone closeup computer computing connect contact corporate data detail device dial digital electronic gadget instrument internet key keyboard keypad laptop letter macro manager mobile multimedia network notebook office organizer personal phone technical technology telephone work acceptable allocated allocation approved authorised authorized automobiles carpark cars legal legality limited limited-parking management motor-cars no-liability parking protect protection risk risks risky safeguard theft-risk vehicles vistors denied entry-denied entry-prohibited keep-off unauthorised unauthorized 24/7 angled awareness beware camera camera-surveillance cctv closed-circuit-tv day-&-night digital-camera exterior external foliage light lighting lookout monitoring observation observe public security-camera surveillance surveillance-camera trees under-observation video-camera watch watched antenna dish dth modulation radio receiver signal transmission tv wireless blue don’t limited-access no no-pedestrians pedestrian artwork bicycle black & white creative cycle Cycle graphic family graphic happy family boat clouds cloudy kaai maritime mast pole radar ship silhouette sky sunset