Participants gain an understanding of the importance of data for defining and pinpointing safety issues as well as the interrelationships between components of traffic records systems. The content starts with a brief introduction to various data requirements for different types of safety analyses (e.g. network screening, SPF, and CMF development, cost of collisions, and benefit-cost analysis). This will be followed by some key considerations in collecting and maintaining quality data sets. Lastly, examples will be provided of how traffic safety data is applied.