Answer:

1. Fire exit - Fire exit signs are used to clearly inform occupants of a building of the nearest emergency exits, safe evacuation route and general evacuation procedures

2. A warning electrical work in progress - Hazard WARNING signs indicate when a HAZARD OR HAZARDOUS CONDITION is NOT LIKELY TO BE LIFE THREATENING.

3. Prohibition- Prohibition safety signs generally depicted a black safety symbol in a red circle with a diagonal cross through. Prohibition signage, or “no” signs, are often accompanied by the instruction “No” or “Do Not”; such as do not enter, and no smoking.

4. Danger 600 volts- Danger Signs are safety signs for warning when a hazard or a hazardous condition is likely to be life-threatening. The word ‘Danger’ is featured inside a red oval which in turn is inside a black rectangle and often feature other warning symbols. Danger safety signage has many uses and can warn of many dangerous situations – such as fuel storage, radiation, high voltage, chemicals, open holes and much more.