The propaganda skill with clear information and clear goals means that the propaganda information should be clear and easy to be understood and mastered by the masses. The goal of propaganda should be specific, which can be reflected by clear behavioral indicators. For example, slogans such as "Stop at the red light, go at the green light" and "Take a look at slow three's passing" are all propaganda for specific actions. This kind of propaganda technique has effectively established a code of conduct that abides by traffic rules and attaches importance to traffic safety.