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Before uncoupling a semi-trailer, an essential check is that:

Correct answer

The semi-trailer is supported and stable

Before uncoupling, the semi-trailer support must be secured so it remains stable and does not drop or move unexpectedly.

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  • The semi-trailer is supported and stable

  • The connections are released before checking support

  • It is enough that the load is centered

The real exam in English is a translation of the Spanish original; compare both here.

Show the Spanish original

Antes de desacoplar un semirremolque, una comprobación esencial es que:

  1. El semirremolque queda apoyado y estable(Correct answer)
  2. Las conexiones se sueltan antes de comprobar el apoyo
  3. Basta con que la carga este centrada

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