Rhondda, Cynon, Taff is a Welsh Unitary Authority.
| Year | All Motor Vehicles | Cars and Taxis | Road Network Total Length |
|---|---|---|---|
| 2000 | 1,139,800,000 | 946,200,000 | 712.8 miles (1,147.2 km) |
| 2001 | 1,152,100,000 | 959,900,000 | 714.3 miles (1,149.5 km) |
| 2002 | 1,188,100,000 | 989,800,000 | 715.8 miles (1,151.9 km) |
| 2003 | 1,169,000,000 | 973,500,000 | 717.2 miles (1,154.2 km) |
| 2004 | 1,207,200,000 | 995,900,000 | 722.0 miles (1,162.0 km) |
| 2005 | 1,206,500,000 | 996,100,000 | 726.3 miles (1,168.9 km) |
| 2006 | 1,225,000,000 | 1,005,600,000 | 730.3 miles (1,175.3 km) |
| 2007 | 1,242,200,000 | 1,016,100,000 | 733.2 miles (1,180.0 km) |
| 2008 | 1,235,000,000 | 1,011,800,000 | 740.5 miles (1,191.7 km) |
| 2009 | 1,218,200,000 | 1,000,900,000 | 744.5 miles (1,198.1 km) |
| 2010 | 1,202,500,000 | 982,500,000 | 744.9 miles (1,198.8 km) |
| 2011 | 1,228,200,000 | 1,006,000,000 | 747.8 miles (1,203.5 km) |
| 2012 | 1,244,100,000 | 1,019,000,000 | 750.2 miles (1,207.4 km) |
| 2013 | 1,262,600,000 | 1,033,100,000 | 751.2 miles (1,208.9 km) |
| 2014 | 1,301,500,000 | 1,061,300,000 | 752.3 miles (1,210.7 km) |
| 2015 | 1,337,800,000 | 1,088,700,000 | 754.2 miles (1,213.7 km) |
| 2016 | 1,371,300,000 | 1,111,100,000 | 756.9 miles (1,218.0 km) |
| 2017 | 1,338,700,000 | 1,075,900,000 | 750.0 miles (1,207.0 km) |
| 2018 | 1,370,200,000 | 1,099,400,000 | 751.0 miles (1,208.6 km) |
| 2019 | 1,377,800,000 | 1,114,800,000 | 752.3 miles (1,210.7 km) |
| 2020 | 1,053,200,000 | 818,700,000 | 750.9 miles (1,208.4 km) |
| 2021 | 1,191,100,000 | 922,700,000 | 751.4 miles (1,209.2 km) |
| 2022 | 1,309,200,000 | 1,025,600,000 | 753.5 miles (1,212.7 km) |
| 2023 | 1,356,400,000 | 1,075,000,000 | 754.2 miles (1,213.8 km) |