Traffic volumes are measured for all roads within McLennan County classified as a collector, arterial or freeway. These counts are referred to as saturation counts and are performed once every five years. Saturation counts are performed for the MPO by the Texas Department of Transportation.
Difference between Average Daily Traffic (ADT) and Saturation Counts
The saturation counts measure only the number of axles divided by two. As a result, roadways with a large number of trucks will be overcounted. ADT takes into account the number of trucks and is a more accurate reflection of the number of vehicles. Notwithstanding, the saturation counts provide the MPO with trend data and are also the only consistent traffic data for roads off of the state highway system.
Most recent traffic counts(PDF, 61KB) (spreadsheet of volumes within the Metropolitan Area).
Map graphically depicting the volumes within the urbanized area(PDF, 1MB)
Map showing the change in traffic volumes between 2005 and 2010(PDF, 1MB)
Map showing the percentage of change in traffic volumes between 2005 and 2010(PDF, 1MB)