Keeping emergency equipment on a bus is: Question Keeping emergency equipment on a bus is: Answers Optional. Encouraged, especially if there is extra room on the bus. Encouraged if there are more than 15 passengers present. Required by law. Explanation Commercial vehicles must be equipped with the appropriate emergency equipment. Equipment should include a fire extinguisher, emergency reflectors, and spare fuses, if applicable. This questions appears in the following tests: Georgia Passenger Georgia Passenger