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TRIS Online Accession Number:00780103
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NTL Classification:NTL-GEOGRAPHIC INFORMATION SYSTEMS-GEOGRAPHIC INFORMATION SYSTEMS;NTL-SAFETY AND SECURITY-Highway Safety;NTL-SAFETY AND SECURITY-Accidents;NTL-REFERENCES AND DIRECTORIES-Statistics;
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Abstract:Project Description: The Cheyenne Area Transportation Planning Process (ChATTP)
has developed a PowerPoint presentation demonstrating how to use an existing
accident database with GIS software. The slides are followed by a hands-on
demonstration of the GIS system using the actual data.
ChATPP has been intensely involved and a leader in GIS development in the City
of Cheyenne and Laramie County. Recently we have taken the steps to try and
interest users, that are not GIS technical people, in the use of ArcView in a
desktop application. One of the projects that has been developed, is making
accident data obtained from Wyoming Department of Transportation (WYDOT)
available to ArcView users. How this project was developed is explained briefly
below. What is important to stress is that the information is available to
users and demonstrating to them how the software works.
Background: The Cheyenne urban area has a population of approximately 72,000
people. We have a slow but steady growth of about 1% and is the northern most
city along the rapidly growing Front Range in Colorado. The Metropolitan
Planning Organization (MPO) is responsible for transportation planning in the
urban area. To assure the safety of the traveling public as the population
grows, we are looking at access management standards for our main arterials.
Need: Our first step was to establish if there was a need for access management
standards. The number and cause of collisions are the main determinate of the
safety of the roadway. So, we needed to be able to examine, in depth, the
collisions that occurred along our arterial roadways to determine if they could
be prevented by having access control measures in place.
GIS: The Wyoming Department of Transportation is responsible for collecting all
of the accident information in Wyoming. Using an extract of the state's
database, we obtained database files for accidents from 1984 to 1996. The files
were then put into ArcView GIS to create maps of specific locations or to use
the databases for queries. The end result could then be displayed graphically
as well as in tabular form. The GIS also allows inquiries on the map that is
linked to the database.
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