SECTION FIVE: Trailer System

Chapter 6 of 10 in the Air Brake Manual (No printed edition date; the file is old). The Air Brake Knowledge Test draws questions from this chapter; the 10 below are Guidepost's, each linked to the page it comes from.

Question 1 of 10

When tractor and trailer air lines are coupled, what does opening or closing the trailer supply valve do to the tractor protection valve?

The handbook page appears after you answer

The handbook pages these come from

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Nova Scotia Air Brake Knowledge Test practice, for the Air brake endorsement

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Guidepost Testing is practice material written from the official handbook. It is not the government's test and contains no questions from it.

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Each question shows the date we last checked its source.

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