[sdh]

In a crash, "The child will go against the seat, and that will absorb most of the impact," said John Hamilton, transportation director for the Jackson County, Fla., school board.

How do you go against the seat when the bus flips over?

[ScottBurson]

Too bad the article didn't comment on the frequency of bus rollovers. One is left to conclude, though, that they must be extremely rare, if the average annual fatality rate is 6.

[tomjen3]

The busses would be extremely heavy in the bottom, and in addition it would require a collision with a large object to tip it over.

[smackfu]

I think the more common case for a tip-over is going off the road into a ditch.

[trafficlight]

Instead of the seat absorbing the impact, the soft, metal roof does the job.

And more seriously, do buses have crumple zones like cars do? If a bus were to roll over, is the passenger compartment designed to work like a roll cage? Or does it just collapse?