Z-89 Non-Fire Practice Test

Safety signs use color to convey action you must take. Blue is reserved for mandatory actions, meaning you are required to do something—for example, wear PPE or perform a specific procedure. This color cue helps you act quickly and correctly in safety-critical situations.

Red signals danger or prohibition, not a required action. Green marks safety or exit routes, not what you must do. Yellow indicates caution or warning. So identifying blue as indicating mandatory actions is the correct interpretation.