TIRF, in partnership with Westat, conducted a study that investigated strategies used by law enforcement agencies to reduce the time, and subsequent cost, of processing DWI arrests. Data were gathered from police agencies in six states to document how strategies were implemented and the outcomes associated with them. The improvements, their resulting time and cost savings, as well as experiences regarding the implementation of these improvements are described in this report and used to inform the development of a roadmap that other agencies can rely upon if they are interested in implementing these types of solutions.