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Which frame feature accommodates the rear axle in a low floor vehicle?

  • A.A kick up over the axle
  • B.A straight rail passing beneath the axle, which requires the floor to be raised throughout the whole rear area
  • C.A dropped centre section
  • D.A separate rear subframe, which is bolted to the main rails and carries the whole of the rear suspension assembly

Answer: A

The side rails sweep upward over the rear axle so that the floor between the axles can be set low while still leaving clearance for the axle to move through its travel. A dropped centre section achieves the same result between the axles. The two features are usually combined in a modern commercial vehicle frame.

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