Biohazard

☢ radioactive ☢️ radioactive ⚠ warning 🚫 prohibited 🚳 no bicycles 🚱 non-potable water 🔞 no one under eighteen ☣️ biohazard ⚠️ warning 📵 no mobile phones ⛔ no entry 🚸 children crossing 🚯 no littering 🚭 no smoking 🚷 no pedestrians