🔠 Categories » 💯 Symbols & Signs » ⚠️ Warnings⚠️ Warnings Emoji☣️Biohazard🚸Children Crossing🚳No Bicycles⛔No Entry🚯No Littering📵No Mobile Phones🔞No One Under Eighteen🚷No Pedestrians🚭No Smoking🚱Non-potable Water🚫Prohibited☢️Radioactive⚠️Warning