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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 | 378.646 |
| Carson | 779.510 |
| Dallam | 698.334 |
| Deaf Smith | 603.300 |
| Gray | 762.066 |
| Hansford | 525.584 |
| Hartley | 550.219 |
| Hemphill | 384.153 |
| Hutchinson | 491.741 |
| Lipscomb | 414.262 |
| Moore | 486.793 |
| Ochiltree | 431.679 |
| Oldham | 471.703 |
| Potter | 916.435 |
| Randall | 933.297 |
| Roberts | 243.500 |
| Sherman | 444.783 |