United States
| Name | Areas | Routes |
|---|---|---|
| Alabama | 4 | 165 |
| Alaska | 0 | 0 |
| Arizona | 4 | 22 |
| Arkansas | 15 | 183 |
| California | 6 | 1545 |
| Colorado | 4 | 77 |
| Connecticut | 0 | 0 |
| Deleware | 0 | 0 |
| Florida | 0 | 0 |
| Georgia | 0 | 0 |
| Hawaii | 0 | 0 |
| Idaho | 0 | 0 |
| Illinois | 2 | 20 |
| Indiana | 0 | 0 |
| Iowa | 1 | 12 |
| Kansas | 0 | 0 |
| Kansas | 1 | 0 |
| Kentucky | 2 | 3623 |
| Louisiana | 0 | 0 |
| Maine | 0 | 0 |
| Maryland | 0 | 0 |
| Massachusetts | 0 | 0 |
| Michigan | 0 | 0 |
| Minnesota | 3 | 229 |
| Mississippi | 0 | 0 |
| Missouri | 8 | 560 |
| Montana | 2 | 959 |
| Nebraska | 0 | 0 |
| Nevada | 3 | 97 |
| New Hampshire | 0 | 0 |
| New Jersey | 0 | 0 |
| New Mexico | 2 | 96 |
| New York | 0 | 0 |
| North Carolina | 14 | 45 |
| North Dakota | 0 | 0 |
| Ohio | 2 | 76 |
| Oklahoma | 0 | 0 |
| Oregon | 3 | 6 |
| Pennsylvania | 1 | 183 |
| Rhode Island | 0 | 0 |
| South Carolina | 1 | 0 |
| South Dakota | 1 | 3 |
| Tennessee | 10 | 1287 |
| Texas | 11 | 664 |
| Utah | 6 | 356 |
| Vermont | 5 | 82 |
| Virginia | 2 | 35 |
| Washington | 8 | 1563 |
| West Virginia | 1 | 36 |
| Wisconsin | 0 | 0 |
| Wyoming | 1 | 10 |