Bus operators will often find it economical to convert retired buses to use as permanent training buses for driver training, rather than taking a regular service bus out of use. Some large operators also converted retired buses into tow bus vehicles, to act as tow trucks.
Explain to an 8 year old child that is not yet 49 tall that the safety equipment built into the vehicle is for adults  not children, and a child needs to continue to use the proper equipment (booster seat) so that the adult equipment will fit, and be able to protect, their bodies in the event of a crash.
1 Generally, kids need to use a booster seat until they are at least 4 feet 9 inches tall and weigh between 80 and 100 pounds. 2  For most kids, they will be between ages 8 to 12 year old. 3  We know that when adults wear seat belts, kids wear seat belts.