Danger, caution, and safety instruction signs on a jobsite are used to:

解析

Accident prevention signs and tags exist to communicate: danger signs where an immediate hazard exists, caution signs against potential hazards and unsafe practices, and safety instruction signs for general instructions. Option (b) is the misconception worth catching - a sign is never a substitute for a guard, a barricade, a cover or de-energising, and an employer that posts a warning in place of removing a hazard has satisfied nothing. Option (c) confuses a communication device with a record; training documentation belongs in the injury and illness prevention programme file. Option (d) describes traffic control devices, which are governed by their own rules rather than by the accident prevention sign standard.