מאגר שאלות תאוריה - Heavy trucks (C)

What is the fifth wheel on a Semi-trailer?

• A fixture (plate) that is designed to connect between the cab and the trailer.
• It is a spare wheel to replace flat (punctured) tires.
• It is a popular expression meaning the steering wheel.
• A fixture, shaped like a wheel, designed to lift the driver’s compartment during engine treatment.