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