Roadway Safety Data Integrator (RSDI) Tool & Integrated Highway Safety Information System (HSIS) Datasets

It is an excellent source of data to highway safety research and can be used to investigate many research questions. However, to prepare an analysis-ready roadway safety dataset based on the HSIS or any databases that store the data in multiple different subsets and follow linear referencing, the researchers should integrate multiple datasets, merge or unmerge and remove certain inconsistent records, and finally clean the dataset.

The HSIS staff is usually accommodating and eager to help, but sometimes the nature of data needs is complicated and laborious. A tool named Roadway Safety Data Integrator (RSDI) was developed for combining, segmenting, and selecting homogeneous HSIS roadway segments and also crash assignment by desired crash fields (e.g., crash severity or type). The RSDI tool can be helpful for integrating different safety-related datasets such as roadway inventory (including grade, curve, and other subsets), traffic volume, and crash data; also, it can do required segmentation and identify the homogeneous roadway segments over the desired years of study that are the basis for development and calibration of the HSM predictive models.