INRIX I-95 VPP Data Summary Validation This Case Study summarizes the traffic data quality validations of INRIX data, performed by the University of Maryland on behalf of the I-95 Corridor Coalition during the initial Vehicle Probe Project (VPP). The first VPP spanned six years, from Summer 2008 to Summer 2014,1 and established numerous industry firsts, several of which are highlighted in the next section. Among these industry firsts is establishing and conducting a process to evaluate the quality of the traffic data provided. Following a consistent methodology, 42 site tests were conducted in 11 states over six years to determine and monitor the quality of data INRIX provided under the VPP. All documentation related to quality requirements, validation testing methodology, and site test re

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