WASHINGTON (AP) -- The National Transportation Safety Board is set to release findings in the March 2007 bus crash in Atlanta that killed five baseball players from Ohio's Bluffton University.

The report will come Tuesday at an NTSB meeting in Washington.

The crash, which also killed the bus driver and his wife, has become a flashpoint in a decades-long debate over requiring seat belts and other safety features on buses. Parents of the victims have joined advocacy groups in pressing for new regulations.

Investigators say the bus driver mistakenly drove onto an exit ramp that dead-ends on a bridge over Interstate 75, sending the bus plunging off the overpass. The NTSB has said it was looking specifically at how the passengers died, as well as the operator's safety record.