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National Automotive Sampling System (NASS) Crashworthiness Data Subsystem Analytical User's Manual: 2003 File.
| 题名： | National Automotive Sampling System (NASS) Crashworthiness Data Subsystem Analytical User's Manual: 2003 File. |
| 关键词： | *Statistical-procedures; *Analytical-manual; *User's-manual; *Manuals-; *Annual-reports.;National-traffic-accident-data,Coding-protocol; Data-elements; Analysis-; Coded-values; Crash-researchers; Investigators-; Definitions-; Data-flow; Data-evaluation; Sampling-systems; Instructions-; Case-Forms; Manual-changes; Statistical-data; TablesData-; ChartsGraphs-. |
| 摘要： | The National Automotive Sampling System (NASS) Crashworthiness Data System (CDS) is a nationwide crash data collection program sponsored by the U.S. Department of Transportation. It is operated by the National Center for Statistics and Analysis (NCSA) of the National Highway Traffic Safety Administration (NHTSA). The NASS CDS provides an automated, comprehensive national traffic crash database. Data collection began in 1979 in 10 geographic sites, called Primary Sampling Units (PSU's). In 2002, three additional PSU's were added tothe system so that the 2003 NASS CDS file contains data from 27 PSU's. These data are weighted to represent all police reported motor vehicle crashes occurring in the USA during the year involving passenger cars, light trucks and vans that were towed due to damage. The NASS program was re-evaluated in the mid-1980's. This re-evaluation resulted in changes, which were implemented by NHTSA in January 1988. NASS now has two major operating components: (1) the General Estimates System (GES) which collects data on a sample of police traffic crash reports; and (2) the Crashworthiness Data System (CDS) which collects additional detailed information on a sample of police reported traffic crashes. The NASS CDS file is available in two automated formats: a sequential data set or a Statistical Analysis System (SAS) data set. Hard copy data collection records, sanitized to protect privacy, are available for review through data collection year 1996. An electronic version of these records is available beginning with data collection year 1997. These records contain photographic images, scene diagrams, and vehicle damage diagrams. This manual and the NASS 2003 Crashworthiness Data System's Data Collection, Coding and Editing Manual are the primary documentation supporting the automated file. When using this file one should be careful to understand the coding conventions of all variables used thoroughly. |
| 报告类型： | 科技报告 |
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