What’ s up with all these buses rolling over?
ever since obama said to air up your tires Obamas fault
It's been a really bad run for buses. However, the overall fatality rate is still lower than US air carriers, even adjusting for extraordinary circumstances in 2001:
http://www.bts.gov/publications/national_transportation_statistics/2002/html/table_02_01.html
Those are absolute numbers. I wasn't able to find anything that converted them to rates like passenger miles or passenger hours.