Standards for the design and application of pavement markings can be found in the Manual on Uniform Traffic Control Devices (MUTCD). Design specifications for pavement markings are in the Standard Highway Signs Book. Both of these books are available online at http://mutcd.fhwa.dot.gov. The MUTCD is also available for purchase through the American Association of State Highway and Transportation Officials (http://www.aashto.org), the Institute of Transportation Engineers (http://www.ite.org), the American Traffic Safety Services Association (http://www.atssa.com), and the U.S. Government Printing office (http://www.gpo.gov). The Standards Highway Signs Book can be purchased from the U.S. Government Printing Office and the American Traffic Safety Services Association.