In 2005, Missouri had 175,120 traffic crashes. Of these crashes, 0.6 percent (1,117) involved 1 or more persons being killed. A total of 1,257 persons died in Missouri traffic crashes in 2005; 1 person was killed in a traffic crash every 7.0 hours. A total of 66,413 persons were injured in traffic crashes in 2005, 1 person every 7.9 minutes. The economic loss associated with these traffic crashes was estimated at $3,713,459,000. Speed was a significant factor in the crashes, particularly those that resulted in death and injury. Drunk driving was also a significant factor, as 4.6 percent of the crashes involved an intoxicated driver. Of all fatal crashes, 23 percent involved intoxicated drivers. Of all traffic crashes in 2005, 28.9 percent involved one or more drivers under the age of 21. Of all fatal crashes, 21.1 percent involved a young driver. Of all 2005 traffic crashes, 28.8 percent involved an older driver, with 30.1 percent of all fatal crashes involving an older driver. In 2005, 10.3 percent of all traffic crashes involved a commercial motor vehicle, with 16.2 percent of fatal crashes involving a commercial motor vehicle. In 2005, the driver of an automobile, van, motor home, or truck involved in a Missouri traffic crash had a one in four chance of being injured if they were not wearing their seat belt; however, if they were wearing a seat belt, their chance of being injured was one in eight. Those who were wearing their seat belts when in a crash had a 1 in 32 chance of being killed; whereas, drivers wearing a seat belt had a 1 in 1,017 chance of being killed. Extensive figures and tables