Historically, the Austin experience is similar to other communities’ efforts to enforce driving while impaired (DWI) laws. Austin’s DWI enforcement was originally the sole responsibility of patrol officers. But call-driven patrol duties make it difficult for officers to enforce DWI violations as proactively as they would like. In addition, processing a DWI arrest can take up to four hours, further limiting the officer’s ability to respond to needs of their assigned districts. Caught between responding to urgent calls for assistance and removing impaired drivers from the street, many officers have little or no time to actively seek out the intoxicated drivers.