What type of fuel connection is prohibited between a tractor and another vehicle?

The prohibition of a fuel connection between a tractor and a trailer is primarily due to safety concerns associated with the mobility and potential hazards of transporting flammable materials. Trailers are often used for hauling various types of cargo, and when combined with a tractor, they can create a scenario where the risk of an accident increases significantly if a fuel connection were to exist.

In the event of an accident or an unforeseen circumstance, a fuel connection could lead to leaks or spills, increasing the risk of fire or explosion. Regulations are designed to ensure that any vehicle capable of transport does not have the potential to create dangerous situations with flammable substances.

In contrast, the other options such as trucks, caravans, and vans may have distinct regulations or allow for secure connections that maintain safety and compliance with transportation standards. Understanding these distinctions is crucial for ensuring both operational safety and adherence to relevant regulatory frameworks.