WASHINGTON, D.C. — The National Transportation Safety Board is defending itself against accusations it skewed a study that preceded the shutdown of 26 so-called Chinatown bus operations in the Northeast, according to a Bloomberg report.

An advocacy group cited anomalies in how the board classified motorcoach operators and calculated fatality rates, raising doubts about the report's conclusion that curbside companies, including most Chinatown carriers, are about seven times more likely to have passenger deaths than companies using terminals. For the full story, click here.