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* Certified Data provided for On-System Daily Vehicle Miles, Centerline Miles and Lane Miles are based on calendar year 2022, provided by TPP-Data Management. These mileage statistics are On-System only (under the jurisdiction of TxDOT).
| County | Value * |
|---|---|
| Collin | 10,228,401.751 |
| Dallas | 41,439,684.141 |
| Denton | 12,460,246.292 |
| Ellis | 6,731,727.195 |
| Kaufman | 4,976,985.010 |
| Navarro | 2,359,399.045 |
| Rockwall | 2,779,542.545 |