The Vale of Glamorgan is a Welsh Unitary Authority.
| Year | All Motor Vehicles | Cars and Taxis | Road Network Total Length |
|---|---|---|---|
| 2000 | 614,400,000 | 517,100,000 | 559.5 miles (900.5 km) |
| 2001 | 603,600,000 | 504,000,000 | 560.5 miles (902.0 km) |
| 2002 | 617,700,000 | 520,100,000 | 561.5 miles (903.6 km) |
| 2003 | 620,800,000 | 519,800,000 | 562.6 miles (905.4 km) |
| 2004 | 645,600,000 | 540,100,000 | 565.7 miles (910.4 km) |
| 2005 | 638,400,000 | 531,000,000 | 566.7 miles (912.0 km) |
| 2006 | 634,400,000 | 528,600,000 | 576.1 miles (927.1 km) |
| 2007 | 645,500,000 | 538,800,000 | 576.3 miles (927.5 km) |
| 2008 | 640,700,000 | 530,700,000 | 574.9 miles (925.3 km) |
| 2009 | 622,900,000 | 518,500,000 | 571.9 miles (920.3 km) |
| 2010 | 611,000,000 | 506,900,000 | 571.9 miles (920.4 km) |
| 2011 | 602,600,000 | 502,100,000 | 571.5 miles (919.8 km) |
| 2012 | 614,000,000 | 509,400,000 | 571.3 miles (919.5 km) |
| 2013 | 622,200,000 | 515,000,000 | 571.1 miles (919.2 km) |
| 2014 | 643,900,000 | 532,200,000 | 571.0 miles (919.0 km) |
| 2015 | 660,900,000 | 545,100,000 | 571.1 miles (919.0 km) |
| 2016 | 687,100,000 | 564,900,000 | 572.9 miles (922.0 km) |
| 2017 | 679,300,000 | 554,400,000 | 572.9 miles (922.1 km) |
| 2018 | 690,200,000 | 560,800,000 | 575.6 miles (926.4 km) |
| 2019 | 690,100,000 | 563,400,000 | 578.2 miles (930.5 km) |
| 2020 | 543,400,000 | 429,500,000 | 582.8 miles (937.9 km) |
| 2021 | 607,600,000 | 479,900,000 | 585.8 miles (942.8 km) |
| 2022 | 655,000,000 | 520,200,000 | 587.3 miles (945.1 km) |
| 2023 | 674,100,000 | 545,600,000 | 588.8 miles (947.6 km) |