The Los Angeles Department of Transportation developed a transportation and health database that includes all collisions in the most recently available five-year period, as well as key environmental variables. These data, currently available on the City’s GeoHub, will be continually be updated as new information becomes available. The purpose for developing it was 1. to help the City identify a list of prioritized locations along the High Injury Network (HIN) for the development of safety projects and 2. to develop "countermeasure pairing," the process of identifying the physical design and engineering countermeasures that would most effectively address each "collision profile," a group of collisions with similar contributing factors. The Vision Zero Los Angeles initiative used a hierarchical clustering to develop these LA-specific collision profiles, intersection profile counts, and collision intersection scores. The data found here is a result of that work and will be used in the development of our Action Plan. Please reference the Vision Zero GIS Data Dictionary.pdf for key field names and descriptions.