National Transportation Safety Board officials called for a ban on cell phone use by large truck operators in a statement released on Tuesday.

The statement was made after an NTSB safety investigation determined that a March 2010 truck accident that left 11 people dead in Kentucky was likely caused by the truck driver using a cell phone at the time of the accident.

Investigators found that the driver likely responsible for the Munfordville, Kentucky, accident placed or received 69 mobile phone calls and text messages during the 24-hour period leading up to the accident. He was in the process of making a call on his cell phone at the time his truck veered off the highway.

The ban would prohibit drivers from using mobile devices while operating commercial vehicles, except in cases of emergency.