Тест CDL №1 - Combination

штат Техас

1 / 50

You are coupling a semi-trailer to your tractor but have not yet backed under. The trailer is at the right height when:

A. The trailer will be raised slightly when the tractor is backed under it

B. The kingpin is about 1 1/4 inches above the fifth wheel

C. The end of the kingpin is even with the top of the fifth wheel