Stop Data

The UC Davis Police Department reports officer perceptions of community member identities during police stops, per California’s Racial and Identity Profiling Act (RIPA).

The UC Davis Police Department strives to enforce the law equally and fairly. We do not profile or discriminate against any individual or group because of their race, ethnicity, nationality, religion, gender, sexual orientation or disability.

RIPA requires that California law enforcement agencies collect information from officers about the "perceived race or ethnicity" of the people they detain.

The visualizations below are based on reports from the officer who made the stop, using categories of “perceived race or ethnicity” defined by RIPA standards. Both UC Davis campuses (in Davis and in Sacramento) attract visitors from outside of the region, so drawing correlations to local communities may be difficult. Please note that changes to RIPA categories are anticipated to take effect for law enforcement agencies throughout California in January 2022, which will be reflected in the data below too.


How to interact with the data visualization below:

  • Click through the questions to see how stops unfold.
  • Use the filters to compare data by campus location, what initiated the stop, reason and result of the stop, and whether the person stopped is affiliated with UC Davis.
  • Race and ethnicity are based on officer perceptions.
  • Visualizations are optimized for desktop or tablet screens and may not be visible on mobile devices.
  • Data are updated on a monthly basis.



  1. Stops: A stop is any interaction between someone and a police officer, in which the officer detains the person or conducts a search — including pedestrian and vehicle stops.
  2. Location: UC Davis police officers patrol both the Davis campus and the UC Davis Health campus in Sacramento.
  3. UC Davis Affiliation: Whether the person involved in the stop is affiliated with UC Davis as a student or employee, or else not affiliated with UC Davis.
  4. Race or Ethnicity (Perceived): These race and ethnicity categories are defined by RIPA. The officer reports their perception of people they stop in these categories: White, Hispanic/Latino, Black/African American, Asian, Middle Eastern or South Asian, or Pacific Islander.
  5. Circumstance of the Stop: Was the stop a result of a call for service? If no, then the stop is deemed "officer initiated."
  6. Reason for Stop - Reasonable Suspicion: When the reason for a stop is categorized as “reasonable suspicion of a person involved in criminal activity,” then the officer also selects from several sub-categories: Actions indicative of casing, Carrying suspicious object, Indicative of engaging in violent crime, Matched suspect description, Officer witness (officer witnessed commission of a crime), Other (other reasonable suspicion), or Witness identification (witness or victim identification of suspect at scene).
  7. Reason for Stop - Traffic Violation: When the reason for a stop is categorized as "traffic violation," then the officer also selects from these sub-categories: moving violation, equipment violation and non-moving violation.
  8. Result of the Stop: Potential results of a stop include Warning, No Action, Citation for Infraction, Psychiatric Hold, Noncriminal/Car Transport, In-Field Cite and Release, Field Interview Card Completed or Custodial Arrest without Warrant.