The Police-Public Contact Survey (PPCS) provides detailed information on the characteristics of persons who had some type of contact with police during the past year, including those who contacted the police to report a crime or were pulled over in a traffic stop. The PPCS interviews a nationally representative sample of residents age 16 or older as a supplement to the National Crime Victimization Survey (NCVS). The survey provides information with which to examine citizens' perceptions of police behavior and response during these encounters.
The BJS National Crime Victimization Survey (NCVS) is the nation's primary source of information on criminal victimization. Each year, data are obtained from a nationally representative sample of about 240,000 interviews on criminal victimization, involving 160,000 unique persons in about 95,000 households. Persons are interviewed on the frequency, characteristics, and consequences of criminal victimization in the United States.