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.
On our Facebook group and on our Facebook page, we host a wide variety of questions but one that comes up a lot is: when should my child make the switch from a 5 point harness to a belt positioning booster? While each child and each situation is different, our minimum recommended age for booster seats is 5 years old.