Under regulations then in place, the Massachusetts Department of Public Utilities agreed with CELCo.

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Department of Public Utilities Chairwoman Ann Berwick said that inspectors looked at nine buses used by Fung Wah Bus and found serious problems with eight, including cracks in their frames.

WSJ: Mass. official: Buses pulled from road for safety

"The unprecedented nature of this much snow in this short a period of time will create conditions ... across the entire city that are basically unprecedented for the traveling public, " Joe Pajor of the Wichita, Kansas, Public Works and Utilities department, told CNN affiliate KSN.

CNN: 'Truly a historic blizzard,' weather service says