Alberta Air Brake (Q) Knowledge Test Practice Questions - Alberta Air Brake (Q Endorsement) Knowledge Test Exam - Variant 2

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In Alberta's tractor protection system check, which button positions are set before disconnecting both trailer air lines?

Both valves pushed in Both valves pulled Only the foot valve held down Trailer air supply valve (red) pushed in; park control valve (yellow) pulled

Correct Answer:

Trailer air supply valve (red) pushed in; park control valve (yellow) pulled

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