Project heads can use this set to shed light on the progress levels of various activities or stages of a project. Product managers can illustrate the delays or issues (red light) in product development life cycle, in progress tasks (yellow light), and successfully launched products (green light). Driving instructors, educators, and traffic police officers can demonstrate the common traffic rules and the significance of yellow, green, and red lights. Risk managers can depict the level and severity of various forms of risks.