You may not park a vehicle carrying hazardous materials within ____ feet of an open fire.

Parking a vehicle carrying hazardous materials near an open fire is strictly regulated to ensure safety. The correct distance of 300 feet is established to mitigate the risk of fire spreading or causing an explosion due to the chemicals involved. This distance helps provide a buffer zone that can prevent the heat and flames from igniting the hazardous materials, which could lead to catastrophic outcomes not only for the vehicle and its load but also for nearby individuals and property.

The regulations are in place because hazardous materials can vary significantly in their flammability and danger levels. By maintaining a distance of at least 300 feet from an open fire, it minimizes potential exposure to flames, heat, and the possibility of ignition. This safety precaution is critical in emergency response situations, ensuring that vehicles transporting these materials do not inadvertently escalate a fire situation or create additional hazards.

Understanding the rules around parking and the specific distances required to maintain safety helps both drivers and the public remain secure in environments where hazardous materials are present.