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* Certified Data provided for On-System Daily Vehicle Miles, Centerline Miles and Lane Miles are based on calendar year 2023, provided by TPP-Data Management. These mileage statistics are On-System only (under the jurisdiction of TxDOT).
| County | Value * |
|---|---|
| Collin | 539.098 |
| Dallas | 829.754 |
| Denton | 556.967 |
| Ellis | 634.447 |
| Kaufman | 501.967 |
| Navarro | 523.683 |
| Rockwall | 141.771 |