Does the school have the authority to set traffic reminders on the road? For example: setting up speed bumps, warning slogans on street light poles: Beware of students coming in and out, etc.

Dear, the speed bump in front of the school, the safety prompts on the street lights, etc. are not made by the school, nor should they be made by the school, but by the traffic. Responsibilities of the safety supervision department. They have the responsibility to provide a safe living and learning environment for the school and students. The school does not have the authority to set safety prompts, but it can ask the relevant departments to set it up.