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