Case Studies

Virginia DOT Uses Probe Data to Track Excessive Speeds

The Challenge:

After COVID-related restrictions went into effect, the Virginia Department of Transportation noticed an unsettling increase (24%) in traffic fatalities resulting from excessive speeding. The initial challenge for VDOT was to track excessive speeds from areas of VA-7 where collisions were most often occurring.


By gathering granular speed data provided by INRIX, VDOT was able to create a detailed picture of the problem.


The study revealed distinct patterns of excessive speeding based on time of day and day of the week. Furthermore, heavier traffic volumes appear to be a reliable controller of speed. The study has motivated VDOT to invest deeper into assessing speeding patterns on an even larger scale.

Virginia DOT Case Study

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