Memory Game Safety SignsOnline version This will help you practice safety signs. by Julianne Linza People are keeping this community safe. This is a place where young adults who are in trouble could go. Keep matches, lighters, and cigarettes away! It could electrocute or shock you. Do not pick this up! Hazardous, toxic materials like blood are in here. Firefighters and EMTs work here. Watch where you are walking.