The U.S. Department of Transportation and the Federal Motor Carrier Safety Administration provide this report pursuant to section 32709 of the Moving Ahead for Progress in the 21st Century Act (P.L. 112-141).  Section 32709 required the Secretary to review and assess the current knowledge and skill testing requirements for a commercial driver's license passenger endorsement to determine what improvements to the knowledge test, the examination of driving skills, and the application of such requirements, are necessary to ensure the safe operation of commercial motor vehicles designed or used to transport passengers.