Traffic crashes are a significant source of loss of life, personal injury and financial expense in the United States. In 2008 there were 37,261 people killed and an estimated 2,346,000 people injured nationwide in motor vehicle traffic crashes. State and federal agencies are beginning to focus traffic safety improvement effort on local agency…

The 1990s and early 2000s saw the increased development of advanced training, skills standards, and certification exams by private organizations in the United States. Employers began accepting these skill certifications in lieu of traditional on-the-job training, thereby encouraging employees to acquire more credentials. This article examines the…