Other criteria for the selection of sites included the following:
Sites were sought that were generally representative of the alcohol-impaired driving arrest and adjudication systems found in various parts of the country and that were neither unusually poor nor unusually affluent. An important logistical consideration was that the sites needed to be located in close proximity to Pinkerton offices, which are located in a number of major metropolitan areas throughout the country.
The two sites selected were the City of Milwaukee in Wisconsin and Bergen County, New Jersey. The socio-demographic profiles of the two sites differ considerably. Located on Lake Michigan, the City of Milwaukee is an industrial city. Based on U.S. Census data for 1997, the city has over 613,000 residents, and the median annual household income is about $33,000. The city is ethnically diverse, including 56 percent non-Hispanic white residents, 35 percent African-American or black residents, 8 percent Latino or Hispanic residents, 2 percent Asian residents, and 1 percent Native American residents.
Bergen County is a densely populated county in northern New Jersey.
Based on 2000 U.S. Census data, the county's population is about 884,000.
The median annual household income is about $60,000. The primary minority
groups are Asian residents (11 percent), African-American or black residents
(5 percent), and Hispanic or Latino residents (10 percent).