Key route 21 - West of Birmingham
Key facts
| Fact | Statistic |
|---|---|
| Route length | 18 miles (30 kilometres) |
| Volume of traffic in 2016 | 228.14 million vehicle kilometres |
| Main centres served | Birmingham, Stourbridge, Halesowen, Hayley Green and Harborne |
| Coordinating Highway Authority | West Midlands Combined Authority |
| Responsible local Highway Authority | Birmingham City Council, Sandwell Metropolitan Borough Council and Dudley Metropolitan Borough Council |
| Number of KSI collisions 2014 to 2016 | 49 |