Knowsley is an English Metropolitan District.
| Year | All Motor Vehicles | Cars and Taxis | Road Network Total Length |
|---|---|---|---|
| 2000 | 776,600,000 | 628,200,000 | 347.7 miles (559.6 km) |
| 2001 | 784,600,000 | 635,600,000 | 348.7 miles (561.1 km) |
| 2002 | 805,600,000 | 654,200,000 | 349.5 miles (562.4 km) |
| 2003 | 798,600,000 | 642,700,000 | 350.3 miles (563.7 km) |
| 2004 | 815,500,000 | 652,100,000 | 355.4 miles (571.9 km) |
| 2005 | 835,700,000 | 666,200,000 | 356.1 miles (573.0 km) |
| 2006 | 835,100,000 | 662,900,000 | 356.7 miles (574.1 km) |
| 2007 | 841,300,000 | 669,700,000 | 359.2 miles (578.1 km) |
| 2008 | 835,800,000 | 667,500,000 | 359.5 miles (578.6 km) |
| 2009 | 838,700,000 | 677,200,000 | 359.9 miles (579.2 km) |
| 2010 | 831,700,000 | 665,100,000 | 361.0 miles (581.0 km) |
| 2011 | 841,600,000 | 670,300,000 | 358.5 miles (577.0 km) |
| 2012 | 843,500,000 | 669,200,000 | 359.9 miles (579.2 km) |
| 2013 | 857,200,000 | 679,700,000 | 360.5 miles (580.1 km) |
| 2014 | 881,000,000 | 694,900,000 | 361.4 miles (581.7 km) |
| 2015 | 894,500,000 | 699,900,000 | 361.1 miles (581.2 km) |
| 2016 | 911,400,000 | 715,100,000 | 360.8 miles (580.7 km) |
| 2017 | 959,700,000 | 755,200,000 | 361.4 miles (581.6 km) |
| 2018 | 978,900,000 | 775,500,000 | 365.0 miles (587.5 km) |
| 2019 | 998,400,000 | 794,100,000 | 368.5 miles (593.0 km) |
| 2020 | 856,400,000 | 652,600,000 | 373.0 miles (600.3 km) |
| 2021 | 935,300,000 | 715,400,000 | 374.1 miles (602.0 km) |
| 2022 | 1,020,000,000 | 790,500,000 | 371.9 miles (598.5 km) |
| 2023 | 989,000,000 | 770,500,000 | 373.7 miles (601.5 km) |