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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 * |
|---|---|
| Armstrong | 432,914.129 |
| Carson | 922,358.740 |
| Dallam | 506,000.472 |
| Deaf Smith | 505,875.659 |
| Gray | 683,858.227 |
| Hansford | 126,812.156 |
| Hartley | 496,102.450 |
| Hemphill | 130,984.627 |
| Hutchinson | 336,062.662 |
| Lipscomb | 80,579.716 |
| Moore | 564,418.965 |
| Ochiltree | 206,308.157 |
| Oldham | 1,025,315.456 |
| Potter | 2,753,131.280 |
| Randall | 1,796,938.685 |
| Roberts | 92,284.152 |
| Sherman | 286,171.869 |