Manitoba Class 3 Drivers Licence Practice Test

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Study for the Manitoba Class 3 Drivers Licence Test. Test your knowledge with interactive quizzes, flashcards, and detailed explanations. Prepare confidently with comprehensive resources!

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What must a coupling device, other than a fifth wheel mechanism, have?

An automatic lock system
A double coupling feature
An auxiliary safety chain
A manual release system

The correct answer is: An auxiliary safety chain

A fifth wheel mechanism can cause strain on the coupling device due to heavy loads on long rides; therefore, the National Highway Traffic Safety Administration has issued certain requirements for coupling devices such as the need for an auxiliary safety chain to prevent any detachment in case of unexpected events, like a sudden stop or swerve. An automatic lock system and a double coupling feature do not provide the necessary security in case of unexpected events. A manual release system also does not serve as a reliable safety measure, as it requires manual intervention which may not be possible in certain situations. Hence, the only necessary feature for a coupling device, other than a fifth wheel mechanism, is an auxiliary safety chain.