DRISI Reports, Publications, and Data
The Division of Research, Innovation and System Information (DRISI) presents links to our reports, products, and data.
DRISI research has several types of reports generated for each project. Preliminary Investigations reviews that provide a comprehensive overview of historical and existing national and international research and best practices for defined research needs. Please select the overview page here or youse the links below to go directly to the specific report page.
- Preliminary Investigations are pre-reserearch reviews that provide a comprehensive overview of historical and existing national and international research and best practices for defined research needs.
- Research Notes are released at the beginning of a research task, provide an overview of research in progress to a general audience.
- Final Reports document the executed methodology, detailed findings for completed research tasks, and Research Results.
- Research Results are two-page briefs written for the general audience to quickly and concisely communicate the results of completed research tasks.
- The Annual Report highlights the research program's yearly achievements, activities, and research results.
Caltrans Fact Booklet contains a selection of data from many of the divisions in the Department. The booklet was originally printed in card format for Caltrans Executives, but since we compiled the information into a booklet, it has been shared widely throughout the Department and to members of the legislature. Go to California Fact Booklets to see all available years.
The GIS Program is the focal point for all GIS activities in the Department. Some important links:
- Caltrans Web Map Gallery - Interactive Web Maps
- Public Postmile Query Tool - Interactive Postmile Viewing Map
- Caltrans Earth - Recommend using Internet Explorer for the best viewing
- District-County Map - Contains updated District 9 boundaries as of 11-1-15
- District-Region Map - Contains all Caltrans Districts and Regions
Data on highways and highway systems, California Road System (CRS) maps, National Highway System (NHS), Strategic Highway Network (STRAHNET), and route descriptions and route numbering for state highways.
The HPMS is a federally mandated planning study designed by the Federal Highway Administration (FHWA) and implemented as a continuing information system that encompasses data collection, data analysis, and analytical modeling. Authority for the study is vested in Section 307 of Title 23, United States Code.