It is well-established that speeding represents a risk to public safety. Excessive speed increases the likelihood of crashing and the risk of severe injury in a crash. In 2005, more than 13,000 lives were lost in speeding-related crashes (NHTSA, 2006a). Reducing speeding is a high-priority objective and effective speed enforcement is an essential countermeasure to reduce speeding and lowering crash risk. The National Highway Traffic Safety Administration and the Federal Highway Administration have developed Speed Enforcement Program Guidelines to provide law enforcement personnel and decision...