Even though he was 1,000 miles away in Ohio, John Betts instantly felt nauseated when he learned about Friday morning's deadly bus crash in Sherman, which claimed the lives of 17 Vietnamese Catholics on their way to a religious festival.

His 20-year-old son, David, was crushed to death in March 2007 in another rollover accident in Atlanta during a bus trip with his college baseball team.

That bus, like the one in the Sherman accident, was not equipped with safety belts, except for the driver's seat. Most of those who died were ejected from their seats. Some were crushed.

Now a safety activist, Mr. Betts obsesses about when federal regulators will end 40 years of inattention and order seat restraints that he believes would have prevented David's death and almost all deaths in commercial bus accidents.

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