Is it necessary to carry a fire extinguisher on the highway?
1 Answers
It is advisable for private cars to carry one. Highway traffic police generally do not conduct special inspections on whether small vehicles are equipped with car fire extinguishers. However, for passenger buses, tourist buses, school buses, and hazardous chemical transport vehicles, they will focus on checking whether they are equipped with vehicle-mounted fire extinguishers, warning triangles, and other equipment, as well as whether the fire extinguishers have expired. The types of vehicle-mounted fire extinguishers are as follows: 1. Dry powder fire extinguisher: The principle of extinguishing is chemical suppression, blocking the chain reaction of combustion. It has a high fire extinguishing level, comprehensive functions, and rapid extinguishing capability. It also has good electrical insulation performance and performs well at low temperatures, making it particularly suitable for use in factories, warehouses, and outdoor settings. The drawback is that dry powder extinguishing agents are not resistant to re-ignition, and users must undergo specialized technical training. Due to its price advantage, most vehicles are equipped with portable pressurized dry powder fire extinguishers. 2. Carbon dioxide fire extinguisher: The extinguishing mechanism is suffocation, achieved by reducing the oxygen concentration around the burning material. Carbon dioxide, as an extinguishing agent, has good insulation properties. However, its drawback is that it requires a high extinguishing concentration, resulting in a low fire extinguishing level. It is suitable for use in relatively enclosed spaces but has poor resistance to re-ignition. Carbon dioxide is a moderately toxic substance, and when its concentration in the air reaches 2%, it can cause discomfort. 3. Aqueous film-forming foam fire extinguisher: The extinguishing mechanism is cooling and isolation. It has a high fire extinguishing level and causes minimal water damage during use, with no secondary pollution from dry powder or the toxicity of carbon dioxide. However, the biggest disadvantage of domestically produced aqueous film-forming foam extinguishing agents is their poor stability after dilution, making them unsuitable for long-term storage. For a practical extinguishing agent, storage stability is one of its most important performance indicators.
