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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 | 1,587.682 |
| Dallas | 3,574.083 |
| Denton | 1,835.621 |
| Ellis | 1,626.640 |
| Kaufman | 1,234.485 |
| Navarro | 1,275.787 |
| Rockwall | 368.081 |