A-road
A4130 traffic and collisions
The A4130 is an A-road of 29.2 miles, from Windsor and Maidenhead to Oxfordshire. This page covers its traffic at 17 DfT count points since 2000 and the collisions police recorded on it.
- Traffic in 2025 119m vehicle miles
- Average daily traffic 11,191 vehicles a day, both directions
- Busiest section 23,242 B4493 to A34 Milton Heights
- HGV share 4.5% of vehicle miles
- Traffic since 2019 −2.9% same count points
- Collisions, 2021 to 2025 96 17.0 per 100m vehicle miles
How busy is the A4130?
On an average day in 2025, 11,191 vehicles passed each point on the A4130, counting both directions. The busiest section is B4493 to A34 Milton Heights (Oxfordshire), with 23,242 a day; the quietest listed is A4130 split to A321, with 9,478.
Busiest sections, 2025
B4493 to A34 Milton Heights carries 2.1 times the road’s average flow.
| Section | Vehicles a day |
|---|---|
| B4493 to A34 Milton Heights Oxfordshire · 2.2 mi · HGVs 8.8% | 23,242 |
| A4074 to A329 Oxfordshire · 0.8 mi · HGVs 3.6% | 17,920 |
| Lambridge Wood Rd to A4155 Marlow Rd Oxfordshire · 0.7 mi · HGVs 3.1% | 12,295 |
| B4016 Broadway to B4016 Lady Grove Oxfordshire · 0.6 mi · HGVs 4.8% | 11,369 |
| A329 to B4016 Broadway Oxfordshire · 5.8 mi · HGVs 4.8% | 10,242 |
| A34 Milton to A417 Oxfordshire · 1.9 mi · HGVs 2.9% | 10,217 |
| Roundabout A4074/A4130 to Junction where Lambridge Wood Road intersects A4130 Oxfordshire · 9.1 mi · HGVs 3.0% | 9,729 |
| B4016 Lady Grove to B4493 Oxfordshire · 2.1 mi · HGVs 3.4% | 9,482 |
| A4130 split to A321 Windsor and Maidenhead, Wokingham · 5.1 mi · HGVs 4.3% | 9,478 |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
Route
Windsor and Maidenhead to Oxfordshire · 29.2 miles
A4130 traffic and collisions by section
13 sections between junctions, in route order. Each is the average of its DfT count points, weighted by length. 2 short link roads and spurs (0.2 miles) count in the road’s totals but are not listed.
Sections Tap a column heading to sort
| # | |||
|---|---|---|---|
| 1 | A4130 to A404(T)Windsor and Maidenhead | 11,234 | fewer than 3 |
| 2 | A4130 split to A321Windsor and Maidenhead, Wokingham | 9,478 | 13 |
| 3 | A321 to A4130 Thames SideWokingham, Oxfordshire | 15,949 | 4 |
| 4 | Bell St to Hart StOxfordshire | 8,597 | 0 |
| 5 | A4130 / A4155 Rnbt to New St / Bell St JunctionOxfordshire | 14,486 | fewer than 3 |
| 6 | Lambridge Wood Rd to A4155 Marlow RdOxfordshire | 12,295 | 3 |
| 7 | Roundabout A4074/A4130 to Junction where Lambridge Wood Road intersects A4130Oxfordshire | 9,729 | 17 |
| 8 | A4074 to A329Oxfordshire | 17,920 | 3 |
| 9 | A329 to B4016 BroadwayOxfordshire | 10,242 | 9 |
| 10 | B4016 Broadway to B4016 Lady GroveOxfordshire | 11,369 | 0 |
| 11 | B4016 Lady Grove to B4493Oxfordshire | 9,482 | 6 |
| 12 | B4493 to A34 Milton HeightsOxfordshire | 23,242 | 20 |
| 13 | A34 Milton to A417Oxfordshire | 10,217 | 9 |
Vehicles a day is the average daily flow in 2025. “Since 2019” compares the same count points. Collisions are those with the A4130 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.
A4130 traffic by vehicle type
Cars and taxis make up 78.6% of the vehicle miles on the A4130. HGVs account for 4.5%, rising to 8.8% on B4493 to A34 Milton Heights.
Vehicle mix, 2025
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
HGV share of traffic
| Year | HGV share |
|---|---|
| 2000 | 5.6% |
| 2001 | 4.9% |
| 2002 | 5.0% |
| 2003 | 5.0% |
| 2004 | 5.1% |
| 2005 | 4.7% |
| 2006 | 4.9% |
| 2007 | 4.8% |
| 2008 | 4.8% |
| 2009 | 4.4% |
| 2010 | 4.6% |
| 2011 | 4.5% |
| 2012 | 4.7% |
| 2013 | 4.8% |
| 2014 | 4.7% |
| 2015 | 4.7% |
| 2016 | 4.7% |
| 2017 | 4.8% |
| 2018 | 4.7% |
| 2019 | 4.8% |
| 2020 | 5.6% |
| 2021 | 5.6% |
| 2022 | 5.3% |
| 2023 | 5.1% |
| 2024 | 4.6% |
| 2025 | 4.5% |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
A4130 traffic trend
Traffic on the A4130 came to 119 million vehicle miles in 2025. At the count points present in both years, it is down 2.9% on 2019, before the pandemic, and down 0.6% on 2015.
Vehicle miles a year
Like for like, traffic is down 0.8% on 2000.
| Year | Vehicle miles |
|---|---|
| 2000 | 119m |
| 2001 | 122m |
| 2002 | 118m |
| 2003 | 118m |
| 2004 | 118m |
| 2005 | 118m |
| 2006 | 116m |
| 2007 | 120m |
| 2008 | 117m |
| 2009 | 116m |
| 2010 | 115m |
| 2011 | 117m |
| 2012 | 111m |
| 2013 | 111m |
| 2014 | 113m |
| 2015 | 115m |
| 2016 | 118m |
| 2017 | 118m |
| 2018 | 120m |
| 2019 | 119m |
| 2020 | 93m |
| 2021 | 103m |
| 2022 | 111m |
| 2023 | 115m |
| 2024 | 116m |
| 2025 | 119m |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
Average daily flow
| Year | Vehicles a day |
|---|---|
| 2000 | 11,165 |
| 2001 | 11,526 |
| 2002 | 11,149 |
| 2003 | 11,137 |
| 2004 | 11,146 |
| 2005 | 11,104 |
| 2006 | 10,905 |
| 2007 | 11,293 |
| 2008 | 11,016 |
| 2009 | 10,954 |
| 2010 | 10,861 |
| 2011 | 11,042 |
| 2012 | 10,478 |
| 2013 | 10,420 |
| 2014 | 10,670 |
| 2015 | 10,833 |
| 2016 | 11,023 |
| 2017 | 11,030 |
| 2018 | 11,209 |
| 2019 | 11,153 |
| 2020 | 8,726 |
| 2021 | 9,698 |
| 2022 | 10,449 |
| 2023 | 10,779 |
| 2024 | 10,883 |
| 2025 | 11,191 |
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 (68.8% of today’s road for 2019). In 2025, 2 of the 17 count points were counted; DfT estimated the rest from earlier counts and local trends.
A4130 collisions
Police recorded 96 collisions with the A4130 as the first road from 2021 to 2025, 26 of them fatal or serious, including 6 fatal. That is 17.0 per 100 million vehicle miles, lower than the 31.5 for all A-roads in Great Britain. On average there were 0.7 a year for each mile of road.
Reported collisions by year
Down 9.1% from 2021 to 2025.
| Year | Slight | Fatal or serious |
|---|---|---|
| 2021 | 14 | 8 |
| 2022 | 17 | 5 |
| 2023 | 13 | 6 |
| 2024 | 10 | 3 |
| 2025 | 15 | 5 |
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 |
|---|---|
| B4493 to A34 Milton Heights Oxfordshire · 20 collisions | 22.5 |
| Roundabout A4074/A4130 to Junction where Lambridge Wood Road intersects A4130 Oxfordshire · 17 collisions | 17.7 |
| A4130 split to A321 Windsor and Maidenhead, Wokingham · 13 collisions | 15.3 |
Source:DfT STATS19,UK Motoring analysis 2021 to 2025 Updated
A further 10 collisions were recorded at junctions where the A4130 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 A4130
In route order. Each is the highway authority DfT files the count points under.
- Windsor and Maidenhead
- Wokingham
- Oxfordshire
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 | 17 count points in 2025 | 15 September 2026 |
| Reported collisions | Road safety open data (STATS19) Department for Transport Derived statistics UK Motoring | 2021 to 2025 | 96 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.