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this post was submitted on 18 Jan 2024
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The reason the bus driver has a seat belt and the kids don't is because the kids have a padded seat back in front of them to stop them from launching forward in a crash. The bus driver has nothing but glass and the open road in front of them to stop them from launching forward in a crash. And seat belts help protect the bus driver from the airbags as they deploy from the steering wheel which have been known to deploy so forcefully that if you're not wearing a seat belt they can kill you, and even in some extreme circumstances completely decapitate you.
Also as someone else pointed out the kids could get trapped in their seats in the event of a fire. The bus driver has a little seat belt cutting tool available to them, but in a fire they might not have time to cut 72 seat belts to free all of the kids on a big bus.
You might ask, well what if the bus rolls? It's pretty unlikely that the bus would roll because bus drivers are trained pretty extensively and have to go through periodic medical exams and driving exams to make sure they're capable of doing the job safely. Even if the bus were in a situation where it might roll, it's very bottom heavy so it would take quite a lot to get it to tip over.
An interesting stat about school buses is that over the last 20 years or so, there has been a roughly equal number of bus driver deaths and passenger deaths. Since a school bus typically carries a much larger number of passengers (as many as 70 or more) than drivers (1), this means that the risk of death for the driver is far higher than that for the passengers (although exactly how much riskier it is is difficult to determine from the published data).
Another interesting safety feature of school buses is that the bus bodies are clipped to the chassis rails rather than being bolted or welded to them and thus are held in place solely by friction. This is so that the bus body can slide forward a couple of feet along the rails in the event of a head-on collision, which greatly reduces the deceleration forces experienced by the passengers (this crash test video shows the phenomenon clearly). This does not help the driver much either as they're sliding forward into the engine compartment or into the oncoming vehicle in the case of flat-front buses.
Yeah, buses really aren't going to roll unless they get hit hard on the side by an equally-large vehicle traveling at a high speed - or unless they run afoul of some mythbusters.
The mythbusters clip about the bus is one of my favorites, because it showed just how hard it is to tip over a bus.