Manitoba Class 3 Drivers Licence Practice Test

Disable ads (and more) with a membership for a one time $4.99 payment

Get ready to pass your Manitoba Class 3 Driver's Licence test with flying colors! Take our free practice quiz tailored to mimic the real exam and boost your confidence.

Practice this question and more.


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

  1. An automatic lock system

  2. A double coupling feature

  3. An auxiliary safety chain

  4. 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.