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Project Type
UTRC Research Initiative
Project Dates
04/13/2013 - 12/15/2015
Principal Investigators
Project Status

This projects main objective is to determine the most economical method to collect probe data and then to utilize this probe data to determine expanded and/or contracted lane closure hours for major construction projects.  A cost benefit analysis will be included to measure the savings of using real-time traffic probe data versus existing traffic management approaches based on volume and capacity in the planning, design and implementation of lane closures, which are necessitated by major roadway construction.


INRIX collects information about roadway speeds from over 5 million trucks, delivery vans and other fleet vehicles equipped with GPS satellite locator devices as well as consumer cellular GPS-based devices including the iPhone, Android (operating system) phones, Ford SYNC and Toyota Entune.  The data collected from these sources is processed in real-time, creating traffic speed information for major freeways, highways and arterials across the United States, Canada and the European Union.  The company keeps a database of variables that affect traffic, including weather forecasts, special events, school schedules and road construction, and combines them with the real-time probe data collected.  INRIX uses software originally exclusively licensed from Microsoft to turn those variables into traffic predictions.