Cornwall is an English Unitary Authority. It was created in April 2009.
| Year | All Motor Vehicles | Cars and Taxis | Road Network Total Length |
|---|---|---|---|
| 2000 | 2,495,200,000 | 2,003,700,000 | 4,718.1 miles (7,593.0 km) |
| 2001 | 2,586,200,000 | 2,079,000,000 | 4,724.8 miles (7,603.9 km) |
| 2002 | 2,711,100,000 | 2,182,800,000 | 4,731.4 miles (7,614.5 km) |
| 2003 | 2,813,600,000 | 2,254,400,000 | 4,740.3 miles (7,628.7 km) |
| 2004 | 2,833,500,000 | 2,263,300,000 | 4,524.9 miles (7,282.1 km) |
| 2005 | 2,880,800,000 | 2,290,600,000 | 4,531.1 miles (7,292.1 km) |
| 2006 | 2,958,800,000 | 2,340,200,000 | 4,589.5 miles (7,386.0 km) |
| 2007 | 2,959,700,000 | 2,306,600,000 | 4,604.6 miles (7,410.3 km) |
| 2008 | 3,075,000,000 | 2,410,600,000 | 4,594.1 miles (7,393.4 km) |
| 2009 | 3,068,800,000 | 2,419,200,000 | 4,572.4 miles (7,358.5 km) |
| 2010 | 3,058,100,000 | 2,401,400,000 | 4,570.9 miles (7,356.2 km) |
| 2011 | 3,055,800,000 | 2,405,100,000 | 4,571.0 miles (7,356.3 km) |
| 2012 | 3,003,000,000 | 2,343,700,000 | 4,580.7 miles (7,371.9 km) |
| 2013 | 3,006,500,000 | 2,340,800,000 | 4,590.4 miles (7,387.5 km) |
| 2014 | 3,065,100,000 | 2,371,900,000 | 4,591.2 miles (7,388.8 km) |
| 2015 | 3,126,700,000 | 2,403,700,000 | 4,599.2 miles (7,401.6 km) |
| 2016 | 3,288,100,000 | 2,520,600,000 | 4,616.9 miles (7,430.2 km) |
| 2017 | 3,481,800,000 | 2,672,700,000 | 4,624.3 miles (7,442.1 km) |
| 2018 | 3,468,600,000 | 2,674,200,000 | 4,610.5 miles (7,419.9 km) |
| 2019 | 3,553,400,000 | 2,736,100,000 | 4,615.7 miles (7,428.2 km) |
| 2020 | 2,779,800,000 | 2,051,300,000 | 4,633.3 miles (7,456.6 km) |
| 2021 | 3,172,500,000 | 2,346,600,000 | 4,635.5 miles (7,460.1 km) |
| 2022 | 3,389,100,000 | 2,516,400,000 | 4,630.4 miles (7,451.9 km) |
| 2023 | 3,486,500,000 | 2,608,800,000 | 4,635.3 miles (7,459.7 km) |