Traffic Safety Data and Analysis


When a citation is issued by an Iowa law enforcement officer, the data from that ticket is transmitted to the court system.

Who maintains the data system?
By law, the Iowa Department of Transportation is responsible for the oversight of citations in the state. The judicial branch maintains the Iowa Court Information System, and the Iowa Department of Human Rights’ Division of Criminal and Juvenile Justice Planning oversee the Justice Data Warehouse.

citation and adjudication

What data records are collected?

The Iowa Department of Human Rights' Division of Criminal and Juvenile Justice Planning's justice Data Warehouse is a central repository of key criminal and juvenile justice information system from the Iowa Department of Justice’s Iowa Court Information System, the Iowa Department of Corrections’ Iowa Correctional Offender Network system, the Iowa Department of Public Safety’s criminal history record information,crash data from the Iowa DOT, and other data from various criminal and juvenile justice partners.

The goal of ECCO is to exchange citation data between law enforcement agencies and the courts. The ECCO functionality of TraCS creates electronic citation forms as needed. The citations are generated with a unique identifying number, and sent to the Iowa courts/the Iowa Department of Justice's Iowa Court Information System. The Iowa Department of Human Rights' Division of Criminal and Juvenile Justice Planning's Justice Data Warehouse is updated daily to collect a variety of criminal and juvenile justice data for decision support, statistical analysis, and research.

The Iowa Department of Human Rights' Division of Criminal and Juvenile justice Planning publish statewide, aggregate reports for disposed charges and convictions to their website. Other reports can be requested on an ad hoc basis. Information is available from 1998 to present for most data.

CJJP and The University of Iowa have collaborated to look at the recent crash and citation data linkage. In 2014, we will be looking at a sample of teen drivers who were involved in crashes and drivers who hit a pedestrian or bicyclist.

What standards are applied?

Iowa data definitions meet national law enforcement and court standards, including the National Crime Information Center, Uniform Crime Reporting, National Incident-Based Reporting System, National Law Enforcement Telecommunication System, Law Enforcement Information Network, and the traffic court case management systems functional requirement standards. Data elements are defined for court records in the National Center for State Courts guidelines.

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Laura Roeder-Grubb