2 ptsD,D1Official number: 6854
Which of the following elements should a school bus be equipped with?

Explanation
Correct answer: An external acoustic sound warning that the vehicle is reversing.
In accordance with regulations, a school bus must be equipped with additional features to increase the safety of the children being transported. One of these mandatory features is an external audible signal, which activates automatically when reverse gear is engaged, to warn persons behind the vehicle of the reversing manoeuvre.