Question 1355 from category Rules and Regulations for Israeli license grades C

What is the fifth wheel on a Semi-trailer?

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