Neath Port Talbot is a Welsh Unitary Authority.
| Year | All Motor Vehicles | Cars and Taxis | Road Network Total Length |
|---|---|---|---|
| 2000 | 685,600,000 | 553,000,000 | 535.6 miles (862.0 km) |
| 2001 | 708,000,000 | 573,000,000 | 536.7 miles (863.7 km) |
| 2002 | 725,800,000 | 588,500,000 | 537.6 miles (865.2 km) |
| 2003 | 745,100,000 | 603,300,000 | 538.6 miles (866.9 km) |
| 2004 | 775,900,000 | 623,800,000 | 539.4 miles (868.1 km) |
| 2005 | 788,900,000 | 634,800,000 | 539.0 miles (867.4 km) |
| 2006 | 803,900,000 | 644,100,000 | 542.0 miles (872.3 km) |
| 2007 | 851,900,000 | 680,400,000 | 541.9 miles (872.1 km) |
| 2008 | 832,100,000 | 662,500,000 | 540.5 miles (869.8 km) |
| 2009 | 815,900,000 | 653,800,000 | 538.8 miles (867.1 km) |
| 2010 | 788,300,000 | 627,300,000 | 538.9 miles (867.3 km) |
| 2011 | 807,200,000 | 645,500,000 | 540.0 miles (869.1 km) |
| 2012 | 804,100,000 | 641,200,000 | 537.3 miles (864.6 km) |
| 2013 | 810,200,000 | 647,100,000 | 538.1 miles (866.0 km) |
| 2014 | 832,500,000 | 662,100,000 | 546.7 miles (879.9 km) |
| 2015 | 868,200,000 | 687,600,000 | 544.8 miles (876.8 km) |
| 2016 | 866,700,000 | 688,800,000 | 550.0 miles (885.2 km) |
| 2017 | 874,400,000 | 691,500,000 | 546.3 miles (879.2 km) |
| 2018 | 891,000,000 | 703,800,000 | 545.2 miles (877.3 km) |
| 2019 | 895,600,000 | 713,500,000 | 545.5 miles (877.9 km) |
| 2020 | 677,700,000 | 519,600,000 | 545.7 miles (878.3 km) |
| 2021 | 774,000,000 | 591,800,000 | 545.6 miles (878.1 km) |
| 2022 | 848,300,000 | 651,600,000 | 545.5 miles (877.9 km) |
| 2023 | 858,400,000 | 665,500,000 | 546.1 miles (878.9 km) |