Trunk A-road
A4123 traffic and collisions
The A4123 is a trunk A-road of 12.5 miles, from Birmingham to Wolverhampton. This page covers its traffic at 14 DfT count points since 2000 and the collisions police recorded on it.
- Traffic in 2025 112m vehicle miles
- Average daily traffic 24,502 vehicles a day, both directions
- Busiest section 32,365 A4034 to A461
- HGV share 3.6% of vehicle miles
- Traffic since 2019 +1.0% same count points
- Collisions, 2021 to 2025 332 62.6 per 100m vehicle miles
How busy is the A4123?
On an average day in 2025, 24,502 vehicles passed each point on the A4123, counting both directions. The busiest section is A4034 to A461 (Sandwell), with 32,365 a day; the quietest listed is A4039 to A459 roundabout, with 17,392.
Busiest sections, 2025
A4034 to A461 carries 1.3 times the road’s average flow.
| Section | Vehicles a day |
|---|---|
| A4034 to A461 Sandwell · 2.4 mi · HGVs 4.6% | 32,365 |
| A4037 to A4168 Dudley · 0.6 mi · HGVs 4.0% | 25,532 |
| A457 to A463 Dudley · 1.2 mi · HGVs 5.7% | 23,467 |
| B4169 to A4034 Sandwell · 0.7 mi · HGVs 3.0% | 22,451 |
| A456 to B4169 Sandwell · 2.1 mi · HGVs 2.1% | 22,124 |
| A461 to A4037 Dudley · 0.8 mi · HGVs 3.1% | 21,412 |
| A4040 to A456 Birmingham · 1.4 mi · HGVs 1.3% | 20,337 |
| A4126 to A4039 Wolverhampton · 1.1 mi · HGVs 2.5% | 19,767 |
| A4039 to A459 roundabout Wolverhampton · 0.9 mi · HGVs 1.9% | 17,392 |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
Route
Birmingham to Wolverhampton · 12.5 miles
A4123 traffic and collisions by section
13 sections between junctions, in route order. Each is the average of its DfT count points, weighted by length. 1 short link roads and spurs (0.3 miles) count in the road’s totals but are not listed.
Sections Tap a column heading to sort
| # | |||
|---|---|---|---|
| 1 | A4040 to A456Birmingham | 20,337 | 27 |
| 2 | A456 to B4169Sandwell | 22,124 | 58 |
| 3 | B4169 to A4034Sandwell | 22,451 | 18 |
| 4 | A4034 to A461Sandwell | 32,365 | 80 |
| 5 | A461 to A4037Dudley | 21,412 | 9 |
| 6 | A4037 to A4168Dudley | 25,532 | 10 |
| 7 | A4168 to A457Dudley | 32,578 | 11 |
| 8 | A457 to A463Dudley | 23,467 | 37 |
| 9 | At A463Wolverhampton | 28,312 | 4 |
| 10 | A463 to A4126Wolverhampton | 28,140 | 5 |
| 11 | A4126 to A4039Wolverhampton | 19,767 | 38 |
| 12 | A4039 to A459 roundaboutWolverhampton | 17,392 | 24 |
| 13 | A4123 Birmingham Road meets grove street to A4123 slip road into A4150Wolverhampton | 14,242 | fewer than 3 |
Vehicles a day is the average daily flow in 2025. “Since 2019” compares the same count points. Collisions are those with the A4123 as the first road, placed on the nearest section by their recorded position; rates (per 100 million vehicle miles) are shown for sections of half a mile or more with 10 or more.
A4123 traffic by vehicle type
Cars and taxis make up 80.8% of the vehicle miles on the A4123. HGVs account for 3.6%, rising to 5.7% on A457 to A463.
Vehicle mix, 2025
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
HGV share of traffic
| Year | HGV share |
|---|---|
| 2000 | 4.0% |
| 2001 | 4.1% |
| 2002 | 3.7% |
| 2003 | 4.0% |
| 2004 | 4.0% |
| 2005 | 3.8% |
| 2006 | 3.7% |
| 2007 | 3.6% |
| 2008 | 3.3% |
| 2009 | 2.9% |
| 2010 | 3.0% |
| 2011 | 3.2% |
| 2012 | 3.2% |
| 2013 | 3.4% |
| 2014 | 3.6% |
| 2015 | 3.7% |
| 2016 | 3.7% |
| 2017 | 4.0% |
| 2018 | 4.2% |
| 2019 | 4.0% |
| 2020 | 4.5% |
| 2021 | 4.7% |
| 2022 | 4.5% |
| 2023 | 4.3% |
| 2024 | 4.2% |
| 2025 | 3.6% |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
A4123 traffic trend
Traffic on the A4123 came to 112 million vehicle miles in 2025. At the count points present in both years, it is up 1.0% on 2019, before the pandemic, and up 3.9% on 2015.
Vehicle miles a year
Like for like, traffic is up 1.4% on 2000.
| Year | Vehicle miles |
|---|---|
| 2000 | 108m |
| 2001 | 110m |
| 2002 | 110m |
| 2003 | 106m |
| 2004 | 106m |
| 2005 | 108m |
| 2006 | 114m |
| 2007 | 115m |
| 2008 | 114m |
| 2009 | 111m |
| 2010 | 102m |
| 2011 | 101m |
| 2012 | 101m |
| 2013 | 102m |
| 2014 | 103m |
| 2015 | 105m |
| 2016 | 106m |
| 2017 | 106m |
| 2018 | 112m |
| 2019 | 111m |
| 2020 | 86m |
| 2021 | 99m |
| 2022 | 105m |
| 2023 | 106m |
| 2024 | 109m |
| 2025 | 112m |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
Average daily flow
| Year | Vehicles a day |
|---|---|
| 2000 | 24,511 |
| 2001 | 24,863 |
| 2002 | 24,866 |
| 2003 | 23,990 |
| 2004 | 23,915 |
| 2005 | 24,357 |
| 2006 | 25,827 |
| 2007 | 25,941 |
| 2008 | 25,755 |
| 2009 | 25,039 |
| 2010 | 23,150 |
| 2011 | 22,846 |
| 2012 | 22,834 |
| 2013 | 23,046 |
| 2014 | 23,375 |
| 2015 | 23,735 |
| 2016 | 23,968 |
| 2017 | 23,967 |
| 2018 | 24,445 |
| 2019 | 24,261 |
| 2020 | 18,920 |
| 2021 | 21,674 |
| 2022 | 22,973 |
| 2023 | 23,326 |
| 2024 | 23,784 |
| 2025 | 24,502 |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
The chart counts the whole road as it was each year, so new or renumbered stretches move it. The percentage changes compare only count points present in both years. In 2025, 5 of the 14 count points were counted; DfT estimated the rest from earlier counts and local trends.
A4123 collisions
Police recorded 332 collisions with the A4123 as the first road from 2021 to 2025, 61 of them fatal or serious. That is 62.6 per 100 million vehicle miles, higher than the 31.5 for all A-roads in Great Britain. On average there were 5.3 a year for each mile of road.
Reported collisions by year
Down 24.7% from 2021 to 2025.
| Year | Slight | Fatal or serious |
|---|---|---|
| 2021 | 62 | 11 |
| 2022 | 66 | 14 |
| 2023 | 47 | 17 |
| 2024 | 49 | 11 |
| 2025 | 47 | 8 |
Source:DfT STATS19,UK Motoring analysis 2021 to 2025 Updated
Sections with the highest collision rates
Per 100 million vehicle miles, 2021 to 2025. Sections of half a mile or more with 10 or more collisions.
| Section | Per 100m vehicle miles |
|---|---|
| A4126 to A4039 Wolverhampton · 38 collisions | 98.8 |
| A4039 to A459 roundabout Wolverhampton · 24 collisions | 86.7 |
| A457 to A463 Dudley · 37 collisions | 73.9 |
| A456 to B4169 Sandwell · 58 collisions | 70.4 |
| B4169 to A4034 Sandwell · 18 collisions | 64.8 |
| A4034 to A461 Sandwell · 80 collisions | 60.5 |
| A4040 to A456 Birmingham · 27 collisions | 58.4 |
| A4037 to A4168 Dudley · 10 collisions | 37.2 |
Source:DfT STATS19,UK Motoring analysis 2021 to 2025 Updated
A further 56 collisions were recorded at junctions where the A4123 was the second road; they are not in the figures above. Fatal or serious uses DfT’s adjusted serious figures. How we count collisions
Council areas on the A4123
In route order. Each is the highway authority DfT files the count points under.
- Birmingham
- Sandwell
- Dudley
- Wolverhampton
Data sources and methodology
| Figures | Source | Period | Records | Updated |
|---|---|---|---|---|
| Traffic counts and vehicle mix | Road traffic statistics (AADF by count point) Department for Transport Derived statistics UK Motoring | 2000 to 2025 | 14 count points in 2025 | 15 September 2026 |
| Reported collisions | Road safety open data (STATS19) Department for Transport Derived statistics UK Motoring | 2021 to 2025 | 332 reported collisions | 15 September 2026 |
- Annual average daily flow (AADF) is the average number of vehicles passing a point on a typical day of the year, both directions combined.
- Vehicle miles are AADF multiplied by link length and 365, summed over every count point link on the road.
- Sections join count point links between junctions, using the link lines in DfT’s major road database.
- STATS19 covers personal injury collisions reported to the police. Damage-only collisions are not included, and not every injury collision is reported.
- Serious and slight figures are DfT’s adjusted estimates, which allow for police forces moving to injury-based reporting.
- Counts of one or two collisions below Great Britain level are shown as “fewer than 3”.
Contains public sector information licensed under the Open Government Licence v3.0.