| 0 to 50th Percentile, State Routes |
| 50th to 75th Percentile, State Routes |
| 75th to 90th Percentile, State Routes |
| 90th to 95th Percentile, State Routes |
| 95th Percentile and Above, State Routes |
| 0 to 50th Percentile, Federal Aid Routes; 0 to 50th Percentile, Federal Aid Routes |
| 50th to 75th Percentile, Federal Aid Routes |
| 75th to 90th Percentile, Federal Aid Routes |
| 90th to 95th Percentile, Federal Aid Routes |
| 95th Percentile and Above, Federal Aid Routes |