In terms of safety, what must all refueling trucks have when handling flammable materials?

When handling flammable materials, it is crucial for refueling trucks to be equipped with fire extinguishers. This is because fire hazards can arise during the refueling process due to spills, static electricity, or ignition sources in the vicinity. Having a fire extinguisher readily available ensures that personnel can quickly respond to any fire that may ignite, helping to prevent small incidents from escalating into larger, uncontrollable fires.

While other equipment, such as spill kits or safety goggles, plays an important role in overall safety and risk management, the immediate need for a fire extinguisher is paramount in situations involving flammable materials. Prompt access to the right type of fire extinguishing agent can save lives and property, making it a critical requirement for any operation dealing with combustible substances.