What is the meaning of a circular traffic prohibition sign with a red border, white background, a red diagonal slash, and a pictogram of a vehicle with orange hazard flames/explosions?

1. No Vehicles Carrying Hazardous Goods: prohibits vehicles transporting toxic, explosive, flammable, or radioactive materials from passing
2. Gasoline Refueling Station Ahead: indicates fuel transport trucks must refuel immediately
3. Fireworks Permitted Zone: indicates an authorized fireworks manufacturing district
4. Emergency Evacuation Route: mandates all freight vehicles to unload cargo immediately