1. If you don't wear a helmet, you will become stupid when you collide.

2. Take measures to nip in the bud.

3, life is only once, please cherish life.

Be careful, there is no big mistake, and carelessness makes bigger mistakes.

Observe the right of way, you and I are both safe.

6. The campus stresses safety and accompanies you, me and him.

7. Safety is a string. If it is loose, it will hang up.

8, don't wear a seat belt, into the dead zone.

9, safe travel, safety first.