This synthesis will be of interest to state and local highway agency administrative and executive officers, enforcement agency personnel, attorneys, traffic engineers, and others concerned with managing and enforcing traffic laws at all levels of government. It will also be of interest to manufacturers and marketers of automated speed enforcement (ASE) technology. The synthesis describes the requirements, applications, effectiveness, and issues related to the use of ASE technology. This report of the Transportation Research Board describes the various types of ASE technology as applied in several localities, including descriptions of operational requirements and performance characteristics of these technologies. The synthesis also discusses how citations are processed, and examines the legal and acceptability issues related to ASE technology and public views on these actions. The various technologies on the market at the time of preparation of this synthesis are also described. It should be noted that, as with any application of public surveillance technology, officials are well advised to exercise proper cautions when employing such enforcement procedures.