Which additional system, absent in other types of vehicles, is found in tractors?
- Correct answer: A hydraulic system for lifting and operating attachments.
- A standard electro-hydraulic steering system.
- An Air brake system with a condensed air system.
- A hydrostatic differential-lock system.
Why this is the answer
The correct answer in the official bank: A hydraulic system for lifting and operating attachments.
Tractors have a dedicated hydraulic system that lifts, lowers and powers implements attached to them, such as ploughs or loaders. This is what sets them apart from ordinary vehicles. Systems like air brakes or electro-hydraulic steering are also found in other vehicles, such as trucks and buses, so they are not unique to tractors.