Final answer:
It is vital to maintain a safe distance from vehicles carrying explosives, oxidizers, or flammables when smoking to prevent ignition. Specific safe distances can vary but adhering to official safety guidelines is key to prevent accidents.
Step-by-step explanation:
Smoking near a vehicle carrying explosives, oxidizers, or flammables can pose a significant risk of ignition and subsequent explosion or fire. Safety regulations are in place to create a safe environment when handling these substances. For example, when working in a laboratory setting, the precautions taken with a Bunsen burner, such as ensuring no flammable substances are in close proximity and properly ventilating the space, illustrate the importance of fire safety when near flammable materials. Although specific distances can vary based on local regulations and the materials involved, a general rule of thumb is to maintain a safe distance that prevents any potential for sparks or flames reaching the hazardous materials. It is essential to adhere to official safety guidelines and signs when near vehicles carrying dangerous goods.