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Mandatory sign = a mandatory sign is a sign advising specific behavior.a. Eye protection mush be wornb. Safety helmetc. Ear protectiond. Ear bootse. Ear glovesf. Ear overallsg. Pedestrian must use thia routeh. General danger : lokasi berbahaya

Warning signa. Warning drop (terjatuh)b. Warning low temperaturec. Warning overhad load (beban diatas kepala)d. Warningindustral vehicles (untuk transportasi)e. Warning danger electricity

Prohibitory sign = a prohibition sign is a sign prohibiting behaviora. No smookingb. Naked frales forbiddenc. No acces for..d. Do not extinguish with watere. No acces for anauthirised person

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