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原文传递 National Automotive Sampling System (NASS) Crashworthiness Data System: Analytical User's Manual 2003 File.

题名：	National Automotive Sampling System (NASS) Crashworthiness Data System: Analytical User's Manual 2003 File.
关键词：	DATA COLLECTION; TRAFFIC ACCIDENTS
摘要：	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 2003, three additional PSUs were added to the 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. Comparing the 1988-2003 files with files from years prior to 1988 is not recommended. The principal attributes of the NASS CDS 1988-2003 files include: focusing on crashes involving automobiles and automobile derivatives, light trucks and vans with gross vehicle weight less than 10,000 pounds (4,537 kg); giving special consideration to late model year vehicles (the five most recent model years (four, beginning in 1996)); emphasizing the more serious injury crashes; eliminating the pedestrian and nonmotorist record, the driver record and vehicle registration information. A revised set of data collection forms was designed in 1988 for the crashworthiness data system. Some features are: the introduction of an Accident Event Record to capture all events in the crash; the creation of three new vehicle records (General Vehicle, Exterior Vehicle, Interior Vehicle); and the separation of occupant records into an Occupant Assessment Record and an Occupant Injury Record, wherein all injuries are coded.
报告类型：	科技报告