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.
Depending on the model, boosters fit children from 30-40 lbs. up to 80-125 lbs. Some manufacturers. require a minimum age of 3 or 4. The driver or parent may be cited for misuse if the child is under the. minimum age or weight specified on the label or if a booster is used with just a lap belt. Booster seats were.