This presentation analyzes the impact of safety sign presentation strategies on observers using the C-HIP model. It assesses three safety signs, including a caution poster for trespassers, a safety level sign for medicine, and a caution poster for slippery floors. The purpose, analysis, good and bad aspects, and proposals for changes are discussed for each sign. The presentation proposes changes such as incorporating more interpretable visualizations, highlighting the cause of the hazard, and selecting more distinguishable colors and logos. The subject and course code are not mentioned.