The Department of Transportation says 26 bus operators broke safety rules . A total of 1,271 buses were involved in the crash that killed five people and injured more than 100 others on a busy stretch of Interstate 95 near Washington, D.C. Thirteen of the companies had been ordered out of service but continued to operate .
The Department of Transportation says 26 bus operators broke safety rules . `` These operators transport over 1,800 passengers a day , '' Secretary Ray LaHood says . Thirteen of the companies had been ordered out of service but continued to operate .