![]() ![]() However, researchers requesting data from HSIS can request the output in various formats such as SAS, Microsoft Excel® and Access®, dBase, ASCII, etc. This Guidebook will concern these SAS files - their formats, completeness, and quality. Data files for a given State are linked and manipulated by HSIS staff using SAS code and, as in the past, we have continued to produce SAS format libraries for each of the variables in each of the files. The documentation (variable listings, definitions, etc.) for these raw files and for the SAS files that are developed from them are available at Federal Highway Administration (FHWA) offices.īeginning in 2004, the HSIS system was converted from a SYBASE relational database to an ORACLE relational database for internal use. Raw file data are provided to the Highway Safety Research Center (HSRC) where they are retained as backup information. The Traffic file (volume data) and data from the Reference Post file (True Mileage) have been merged with the Roadlog file beginning with 1990 data, and no longer exist as separate files within HSIS. ![]() The Minnesota data system includes the following basic files:įor ease of use, the three accident subfiles, the Roadlog File, and the Intersection File have been converted to SAS files. Intersection/Interchange File (Year 2001 and Later).Intersection/Interchange File (Year 2000 and Earlier).Office of Safety and Traffic Operations Research & Highway Safety Information System Guidebook for the Minnesota State Data Files SAS File Formats Prepared by ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |