Slough is an English Unitary Authority.
| Year | All Motor Vehicles | Cars and Taxis | Road Network Total Length |
|---|---|---|---|
| 2000 | 559,500,000 | 472,500,000 | 193.9 miles (312.0 km) |
| 2001 | 532,000,000 | 443,000,000 | 194.4 miles (312.9 km) |
| 2002 | 533,300,000 | 448,400,000 | 195.1 miles (314.0 km) |
| 2003 | 529,700,000 | 443,800,000 | 195.7 miles (315.0 km) |
| 2004 | 534,100,000 | 444,500,000 | 193.0 miles (310.6 km) |
| 2005 | 525,100,000 | 432,600,000 | 193.7 miles (311.7 km) |
| 2006 | 520,700,000 | 427,300,000 | 197.2 miles (317.3 km) |
| 2007 | 542,600,000 | 446,200,000 | 195.4 miles (314.5 km) |
| 2008 | 526,400,000 | 435,600,000 | 192.7 miles (310.1 km) |
| 2009 | 526,600,000 | 436,500,000 | 192.7 miles (310.1 km) |
| 2010 | 493,300,000 | 406,400,000 | 193.5 miles (311.4 km) |
| 2011 | 511,400,000 | 421,300,000 | 195.3 miles (314.3 km) |
| 2012 | 519,100,000 | 430,400,000 | 195.6 miles (314.8 km) |
| 2013 | 514,800,000 | 425,400,000 | 196.5 miles (316.2 km) |
| 2014 | 516,100,000 | 421,600,000 | 197.0 miles (317.0 km) |
| 2015 | 525,000,000 | 426,500,000 | 197.7 miles (318.2 km) |
| 2016 | 518,300,000 | 418,300,000 | 198.1 miles (318.8 km) |
| 2017 | 511,300,000 | 412,900,000 | 199.0 miles (320.3 km) |
| 2018 | 515,700,000 | 414,700,000 | 201.4 miles (324.2 km) |
| 2019 | 499,500,000 | 404,100,000 | 201.1 miles (323.6 km) |
| 2020 | 361,900,000 | 279,000,000 | 200.7 miles (323.0 km) |
| 2021 | 388,600,000 | 298,600,000 | 200.8 miles (323.1 km) |
| 2022 | 440,700,000 | 348,700,000 | 201.3 miles (323.9 km) |
| 2023 | 461,900,000 | 365,800,000 | 201.1 miles (323.7 km) |