Highway Safety Information System Guidebook for the California State Data Files. Volume I: SAS File Formats

Council, Forrest M.; Williams, Carolyn D.; Chen, Li Wan; Mohamedshah, Yusuf M.

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Highway Safety Information System Guidebook for the California State Data Files. Volume I: SAS File Formats

2000-03-01
By Council, Forrest M. ; Williams, Carolyn D. ; Chen, Li Wan ; ...

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Creators:

Council, Forrest M. ; Williams, Carolyn D. ; Chen, Li Wan ; Mohamedshah, Yusuf M.

Council, Forrest M. ; Williams, Carolyn D. ; Chen, Li Wan ; Mohamedshah, Yusuf M. Less -
Corporate Contributors:

United States. Federal Highway Administration
Subject/TRT Terms:

[+]

Accident Data California Crash Data Data Files File Formats Interchanges Intersections Inventory Roads Safety Traffic Accidents
Publication/ Report Number:

FHWA-RD-00-137
Resource Type:

Tech Report
Geographical Coverage:

California
TRIS Online Accession Number:

00806444
OCLC Number:

52133900
Edition:

4th ed.
Corporate Publisher:

University of North Carolina, Chapel Hill
NTL Classification:

NTL-REFERENCES AND DIRECTORIES-Statistics;NTL-SAFETY AND SECURITY-Accidents;NTL-SAFETY AND SECURITY-Human Factors;NTL-SAFETY AND SECURITY-Highway Safety;NTL-SAFETY AND SECURITY-SAFETY AND SECURITY;
Abstract:

The California database incorporated in the Highway Safety Information System (HSIS) is derived from the California TASAS (Traffic Accident Surveillance and Analysis System). The system, maintained by the Traffic Operations Office of Caltrans, is a mainframe-based system based on COBOL programming. The Traffic Operations Office provides the data to HSIS in the form of two different data files. These contain (1) accident data and (2) roadway inventory data. Beginning in 1994, the HSIS was converted to a relational database for internal use. This database, using a SYBASE system, stores the data received from California and other States, and the data files for a given State are linked and manipulated using SQL language. However, this conversion from the original SAS-based system to the newer relational system is somewhat transparent to the end-user of the data since the output files produced by SYBASE for modeling and analysis will be SAS formatted. SAS format libraries are produced for each of the variables in each of the files. This Guidebook concerns these SAS files - their formats, completeness, and quality. This report, Volume I: SAS File Formats, contains the following: Introduction; Details of Major Files; California Contacts; Composite List of Variables; Accident Files; Roadlog File; Intersection File; and Interchange Ramp File. The Single Variable Tabulations are found in Volume II of this report.
Format:

PDF
Collection(s):

Federal Highway Administration
Main Document Checksum:

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urn:sha256:f14ed631c679b085d5bc154c9d548dbc3bddf37d6e9e6cc366530282874613a1
Download URL:

https://rosap.ntl.bts.gov/view/dot/4825/dot_4825_DS1.pdf
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Highway Safety Information System Guidebook for the California State Data Files. Volume I: SAS File Formats

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