No mobile phones

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