2 Days
I.D.#96019
By using web-based query tools, individuals can now directly access
many of the major motor vehicle crash databases. However, the query
systems are simplified portals into much more complex underlying
data, and therefore they do not produce the same results available
from the full databases. This seminar will provide important tips on
how to use the query tools to most effectively access and analyze
online crash data.
This seminar focuses on the uses and interrelationships of crash
injury data from diverse sources, including both population-based
data (which can be extrapolated to state or national levels) and
non-population based data. Data sources covered include the Fatal
Accident Reporting System (FARS), National Accident Sampling
System (NASS) Crashworthiness Data System (CDS), Special Crash
Investigations (SCI), Crash Injury Research and Engineering Network
(CIREN), and state police accident report databases. For each
database, the seminar will explore the injury scaling systems and
revisions used, the data elements collected, and the population that is
covered.
Exploring the advantages and limitations of online query systems,
the seminar will provide practical suggestions on what problems can
be answered by these systems, and how to check query results to
avoid common pitfalls. Attendees will obtain a high level of experience
with actual online query systems, as the seminar alternates between
classroom instruction and “hands on” use of the query systems to
solve example projects.
Learning Objectives
By attending this seminar, you will be able to:
Access and perform online queries of crash databases including
FARS, SCI, NASS-CDS, CIREN, and individual States
Distinguish online databases and their inter-relationships
Determine when and how to use each source and type of data
Identify key differences between queries of online vs. downloaded
databases
Access crash types of interest using key characteristics such as
vehicle make, model, body type, characteristics of involved persons,
and restraint system availability/use
Access crash metrics and determine when and how to use Delta V,
Barrier Equivalent Speed and PDOF measures
Identify specific injuries and injury severity levels and use overall
injury measures such as Mais, MAIS, and ISS
Locate specific injuries by understanding and using the NASS-88
and NASS-93 injury severity systems
Describe key statistical concepts such as counts, rates, census,
sampled and weighted data as well as standard errors
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