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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 * |
|---|---|
| Armstrong | 153.915 |
| Carson | 317.084 |
| Dallam | 301.691 |
| Deaf Smith | 272.207 |
| Gray | 333.506 |
| Hansford | 260.816 |
| Hartley | 253.136 |
| Hemphill | 183.276 |
| Hutchinson | 208.088 |
| Lipscomb | 197.853 |
| Moore | 201.988 |
| Ochiltree | 212.040 |
| Oldham | 177.423 |
| Potter | 306.067 |
| Randall | 369.521 |
| Roberts | 120.319 |
| Sherman | 194.871 |