- Data only includes miles travelled on county roads. It does not include miles travelled on city, state or federal roads and highways.
- Lack of a visible bar can occur when the number is so small the result is a bar less than one pixel in height.
| Data for the Knox County Road Miles Chart |
|---|
| Calendar Year | Number of All Vehicle Miles | Change from Prior Year | Number of Truck Miles | Change from Prior Year |
|---|
| 2005 | 29,347.835 | N/A | 939.129 | N/A |
| 2006 | 29,512.905 | 0.6% | 944.411 | 0.6% |
| 2007 | 11,996.616 | -59.4% | 383.892 | -59.4% |
| 2008 | 12,380.366 | 3.2% | 396.171 | 3.2% |
| 2009 | 12,377.056 | 0.0% | 396.066 | 0.0% |
| 2010 | 12,158.666 | -1.8% | 389.077 | -1.8% |
| 2011 | 12,361.932 | 1.7% | 395.582 | 1.7% |
| 2012 | 9,913.245 | -19.8% | 317.224 | -19.8% |
| 2013 | 9,971.980 | 0.6% | 319.103 | 0.6% |
| 2014 | 9,913.150 | -0.6% | 317.221 | -0.6% |
| 2015 | 9,913.150 | 0.0% | 317.221 | 0.0% |
| 2016 | 9,913.150 | 0.0% | 317.221 | 0.0% |
| 2017 | 10,230.933 | 3.2% | 279.493 | -11.9% |
| 2018 | 9,764.674 | -4.6% | 261.498 | -6.4% |
| 2019 | 9,944.354 | 1.8% | 269.462 | 3.0% |
| 2020 | 10,411.134 | 4.7% | 303.717 | 12.7% |
| 2021 | 10,424.629 | 0.1% | 304.157 | 0.1% |
| 2022 | 8,277.867 | -20.6% | 45.143 | -85.2% |