When is a Class 2 driver allowed to pull a trailer exceeding 4,600 kg?

The correct answer indicates a scenario where a Class 2 driver is permitted to pull a trailer exceeding 4,600 kg when neither the bus and trailers nor towed vehicle have air brakes. This is essential because air brakes require specific training and a higher level of understanding to operate safely and effectively. If the vehicle and trailer do not have air brakes, the driver is not subjected to the additional regulatory requirements that govern air brake operations.

In this context, having no air brakes simplifies the operational responsibilities of the driver, allowing them to manage conventional hydraulic braking systems instead. Understanding the limitations of one’s vehicle is crucial for safety and compliance with licensing regulations.

The alternative scenarios presented do not meet the criteria necessary for operating such heavy vehicles. Special license endorsements would have been required if air brakes were in use. The specification about dual tires and their equipping has no bearing on the licensing requirements for towing heavy trailers, making it irrelevant in this case.