Arterial Probe Data Validation

The quality of outsourced probe data on freeways has led many departments of transportation to consider such data for arterial performance monitoring.  From April 2013 through June of 2014, we gathered travel times from several arterial corridors within the mid-Atlantic region using Bluetooth traffic monitoring (BTM) equipment, and compared these travel times with the data reported to the I-95 Vehicle Probe Project (VPP) from an outsourced probe data vendor.  The analysis consisted of several methodologies:  (1) A traditional analysis using precision and bias speed metrics.  (2)  A slowdown analysis which quantified the percentage of significant traffic disruptions accurately captured in the VPP data.  (3) A sampled distribution method in which uses overlay methods to enhance and analyze recurring congestion patterns.

website_arterial-validation (pdf)