I want to participate in a hard-tipped calligraphy competition, it’s about traffic safety, but I don’t know what to write, please help me, please be more reliable~~~

If you limit the topic, you can excerpt some legal regulations or safety slogans on traffic safety methods, etc.

You can use horizontal writing format, leave two spaces in the first line, and write according to the layout of a normal article, with punctuation. After the main text is written, if there is a lot of free space at the back, you can leave it for your signature. If the free space is not big, you can start another line and write your signature in the middle and back part.