Derby is an English Unitary Authority.
| Year | All Motor Vehicles | Cars and Taxis | Road Network Total Length |
|---|---|---|---|
| 2000 | 985,100,000 | 833,500,000 | 463.7 miles (746.3 km) |
| 2001 | 995,400,000 | 842,800,000 | 464.9 miles (748.3 km) |
| 2002 | 1,023,800,000 | 867,200,000 | 466.1 miles (750.1 km) |
| 2003 | 1,030,800,000 | 862,200,000 | 467.3 miles (752.0 km) |
| 2004 | 1,042,100,000 | 869,100,000 | 461.3 miles (742.5 km) |
| 2005 | 1,038,400,000 | 864,400,000 | 463.0 miles (745.1 km) |
| 2006 | 1,034,600,000 | 861,200,000 | 460.9 miles (741.8 km) |
| 2007 | 1,049,400,000 | 870,400,000 | 463.5 miles (746.0 km) |
| 2008 | 1,077,500,000 | 895,400,000 | 466.1 miles (750.2 km) |
| 2009 | 1,070,300,000 | 894,600,000 | 469.1 miles (754.9 km) |
| 2010 | 1,045,700,000 | 869,800,000 | 469.0 miles (754.8 km) |
| 2011 | 1,056,600,000 | 885,000,000 | 472.2 miles (759.9 km) |
| 2012 | 1,057,700,000 | 890,200,000 | 472.6 miles (760.6 km) |
| 2013 | 1,044,000,000 | 875,000,000 | 473.0 miles (761.2 km) |
| 2014 | 1,076,200,000 | 897,100,000 | 474.1 miles (763.0 km) |
| 2015 | 1,087,700,000 | 904,300,000 | 474.3 miles (763.3 km) |
| 2016 | 1,094,700,000 | 911,100,000 | 475.5 miles (765.2 km) |
| 2017 | 1,122,000,000 | 942,100,000 | 477.2 miles (768.0 km) |
| 2018 | 1,115,600,000 | 931,000,000 | 479.6 miles (771.9 km) |
| 2019 | 1,143,200,000 | 961,300,000 | 481.9 miles (775.5 km) |
| 2020 | 984,400,000 | 812,100,000 | 483.3 miles (777.8 km) |
| 2021 | 1,048,000,000 | 863,500,000 | 484.1 miles (779.0 km) |
| 2022 | 1,180,400,000 | 987,500,000 | 484.3 miles (779.3 km) |
| 2023 | 1,195,800,000 | 1,006,200,000 | 485.3 miles (781.0 km) |