Connecticut Crash Data Repository

Connecticut Crash Data Repository

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The Connecticut Crash Data Repository (CTCDR) is a web tool designed to provide access to select crash information collected by state and local police. This data repository enables users to query, analyze and print/export the data for research and informational purposes. The CTCDR is comprised of crash data from two separate sources; The Department of Public Safety (DPS) and The Connecticut Department of Transportation (CTDOT).

The purpose of the CTCDR is to provide members of the traffic-safety community with timely, accurate, complete and uniform crash data. The CTCDR allows for complex queries of both datasets such as, by date, route, route class, collision type, injury severity, etc. For further analysis, this data can be summarized by user-defined categories to help identify trends or patterns in the crash data.


Basic Users:



Advanced Users:

This tool is currently under development.

Notes to users:

New data is added to the repository nightly.
The data provided by CTDOT does not contain personal or private information.
For crashes occurring before 2007 and between March 2011 to December 2011, property damage only crashes occurring on local roads were not recorded in the DOT database. Therefore, PDO crash totals will vary greatly over these time periods for no reason other than the data were not recorded for these crashes.
New features are under development and existing components undergo frequent changes. Please excuse any inconvenience ongoing development might cause.
The repository is optimized for usage with Firefox and Google Chrome. Full support of other browsers will be added soon.
This data is based on the information the officer was able to obtain during his or her investigation. Information such as what the driver was distracted by may not be complete due to a lack evidence for these details.
*NEW Feb 2022: New crash story maps have been added to the repository. Data are updated nightly and users can data filter to generate custom data summaries and visualizations for crash emphasis areas.