Evaluating cell phone data for AADT estimation : research project capsule.
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2016-04-01
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Abstract:Annual average daily traffic (AADT) is a key input in a transportation agency’s roadway
planning, design, operation, and maintenance activities, including air quality and
safety assessments. AADT is required to be reported annually by a state’s Department
of Transportation (DOT) to the Federal Highway Administration (FHWA).
The Louisiana Department of Transportation and Development (DOTD) presently
performs traffic counts on approximately 16,000 miles of state roadways on a three-year
cycle at about 4,800 locations. Traffic counting on non-state roadways is the
responsibility of local governments. Major cities (e.g., New Orleans, Baton Rouge,
Lafayette, and Lake Charles) have traffic counts collected or estimated by their
respective Metropolitan Planning Organizations (MPO). Non-state roadways in
smaller urban areas or in rural areas do not have systematic traffic count or traffic
estimation programs.
A potential alternative for having AADT systematically collected for all state and nonstate
roadways is currently available from Streetlytics, the product of a partnership
combining transportation analytics with location data derived from more than 100
million cellular and GPS devices across more than 15 billion mobile device locations
daily. For any road segment in the United States, Streetlytics provides insights to
traffic volumes, origin and destinations, speeds, and driver demographics.
The purpose of this research is to validate AADT reported by Streetlytics, by using
Baton Rouge Metropolitan Area (BRMA) as a test case. For select BRMA roadways
with available AADT (from either DOTD or local authority), an analysis will be
conducted to verify whether corresponding Streetlytics AADT is valid.
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