What contribution did Garrett Morgan make to the society?

Garrett Morgan was an influential inventor and entrepreneur best known for his contributions to safety and traffic management. He invented the three-position traffic signal, which improved road safety by introducing a caution light, helping to prevent accidents. Additionally, Morgan developed a smoke hood, a precursor to modern gas masks, which was used in firefighting and rescue operations. His innovations significantly impacted public safety and laid the groundwork for future advancements in traffic control and emergency response.