Yes, the numbers have increased significantly in recent years. There are more registered trucks on the highway. About 8 percent of the 205,000 collisions in Indiana in 2014 involved large trucks and other commercial motor vehicles. From 2010 to 2014, collisions involving large trucks increased about 5 percent a year. The number of people suffering incapacitating injuries in crashes involving tractor trailers increased 15 percent from 2010 to 2014.