At least 21 people were injured in a chain reaction accident on an icy Kentucky highway Tuesday morning. The crash involved multiple tractor-trailers and one Greyhound bus.

Details of the Kentucky Greyhound Bus Accident

According to WKRN, the crash occurred on Interstate 65 in Bonnieville at around 8:40 am. The passenger bus, four trucks, and several passenger cars were involved in the chain-reaction crash.

Police say the crash began when a 2007 Volvo tractor-trailer collided with a safety patrol truck from the Kentucky Transportation cabinet which was parked in the emergency lane with its lights flashing. The tractor-trailer then struck a parked service truck, forcing the service truck into a Greyhound bus.

A second commercial truck struck the Volvo tractor-trailer.

21 people were transported to the hospital, including at least one child.

Bus Accident Statistics

The following information was provided by the U.S. Department of Transportation:

• The number of crashes resulting in injuries involving large trucks or buses increased by 62 percent from 60,000 in 2009 to 97,000 in 2015.
• From 2005 to 2015, intercity buses accounted for 13 percent, and school buses and transit buses accounted for 41 percent and 33 percent, respectively, for all buses involved in crashes that were fatal.
• Between 2014 and 2015, the number of buses involved in crashes that caused fatalities increased from 236 to 261, which is an increase of 11 percent.