Reporting and Analysis
Auditing
Any traffic stop study is severely undermined without a strong belief by both police personnel and the community that the data can be effectively audited. The first step in data auditing is the necessity that each data record has a unique identification number on each form or record. This identification will be used to track the data record as it goes into the field and as it is returned for analysis. It is not necessary for the unique identification on the data record to be linked with any individual officer identification.
Obviously the easiest way to audit data is for information about the individual officer making the traffic stop to be included in the data collection protocol. With this information, analysts can compare the traffic stop records with official records of traffic stops or citations. For a variety of reasons many jurisdictions choose not to include information about officer identification. Fortunately, it is still possible to conduct a thorough audit of the data without officer identification.
Without the officer identification an audit of the data can take place through a coordinated effort between the analyst and supervisors in the local jurisdiction. Supervisors can assist the auditing process by comparing the stop forms or Computer Aided Dispatch (CAD) / Mobile Data Terminal (MDT) information for individual officers against other official records of the officers' daily activity such as stop logs or calls for service. This auditing procedure requires some investment on the part of the local agency in supervising the return and oversight of the data cards or CAD / MDT reports.
A final method of auditing can take place by verifying stop information with community members. If identifying information about the individual who was stopped, such as a license number, was included in the data collection procedure, the research team could conduct random samples of the individuals who were stopped and contact the individuals to spot check the accuracy of information recorded during the data collection.
Without information on either the officer or the individual stopped the analyst can still watch for a change in stop patterns in certain locations over time to spot check for unexplained drops or increase in stop activity. The analyst can also compare the information from traffic stop records that result in a citation or arrest against official documents such as the ticket or the arrest sheet. Whatever the auditing mechanism that is chosen, it is important to assure both the officers and the community that accurate and truthful data is a mandatory component of the study.
