Motorway
A329(M) traffic and collisions
The A329(M) is a motorway of 5.0 miles, in Wokingham. This page covers its traffic at 3 DfT count points since 2009 and the collisions police recorded on it.
- Traffic in 2025 113m vehicle miles
- Average daily traffic 61,671 vehicles a day, both directions
- Busiest section 70,787 A329 to M4(J10)
- HGV share 5.4% of vehicle miles
- Traffic since 2019 −6.0% same count points
- Collisions, 2021 to 2025 40 7.6 per 100m vehicle miles
How busy is the A329(M)?
On an average day in 2025, 61,671 vehicles passed each point on the A329(M), counting both directions. The busiest section is A329 to M4(J10) (Wokingham), with 70,787 a day; the quietest listed is M4 to A3290, with 50,997.
Busiest sections, 2025
A329 to M4(J10) carries 1.1 times the road’s average flow.
| Section | Vehicles a day |
|---|---|
| A329 to M4(J10) Wokingham · 2.9 mi · HGVs 6.1% | 70,787 |
| M4 to A3290 Wokingham · 1.9 mi · HGVs 4.0% | 50,997 |
Source:DfT,UK Motoring analysis 2009 to 2025 Updated
Route
In Wokingham · 5.0 miles
A329(M) traffic and collisions by section
3 sections between junctions, in route order. Each is the average of its DfT count points, weighted by length.
Sections Tap a column heading to sort
| # | |||
|---|---|---|---|
| 1 | end of motorway section to A329Wokingham | 30,903 | 3 |
| 2 | A329 to M4(J10)Wokingham | 70,787 | 20 |
| 3 | M4 to A3290Wokingham | 50,997 | 17 |
Vehicles a day is the average daily flow in 2025. “Since 2019” compares the same count points. Collisions are those with the A329(M) 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.
A329(M) traffic by vehicle type
Cars and taxis make up 79.2% of the vehicle miles on the A329(M). HGVs account for 5.4%.
Vehicle mix, 2025
Source:DfT,UK Motoring analysis 2009 to 2025 Updated
HGV share of traffic
| Year | HGV share |
|---|---|
| 2009 | 2.3% |
| 2010 | 3.5% |
| 2011 | 3.9% |
| 2012 | 3.1% |
| 2013 | 3.4% |
| 2014 | 3.9% |
| 2015 | 4.1% |
| 2016 | 4.0% |
| 2017 | 4.5% |
| 2018 | 4.5% |
| 2019 | 5.2% |
| 2020 | 7.1% |
| 2021 | 6.9% |
| 2022 | 5.8% |
| 2023 | 5.6% |
| 2024 | 5.5% |
| 2025 | 5.4% |
Source:DfT,UK Motoring analysis 2009 to 2025 Updated
A329(M) traffic trend
Traffic on the A329(M) came to 113 million vehicle miles in 2025. At the count points present in both years, it is down 6.0% on 2019, before the pandemic, and down 12.0% on 2015.
Vehicle miles a year
| Year | Vehicle miles |
|---|---|
| 2009 | 28m |
| 2010 | 29m |
| 2011 | 164m |
| 2012 | 169m |
| 2013 | 157m |
| 2014 | 152m |
| 2015 | 154m |
| 2016 | 157m |
| 2017 | 131m |
| 2018 | 130m |
| 2019 | 120m |
| 2020 | 77m |
| 2021 | 84m |
| 2022 | 109m |
| 2023 | 111m |
| 2024 | 112m |
| 2025 | 113m |
Source:DfT,UK Motoring analysis 2009 to 2025 Updated
Average daily flow
| Year | Vehicles a day |
|---|---|
| 2009 | 31,652 |
| 2010 | 33,473 |
| 2011 | 60,632 |
| 2012 | 62,728 |
| 2013 | 58,209 |
| 2014 | 56,381 |
| 2015 | 56,872 |
| 2016 | 58,166 |
| 2017 | 71,501 |
| 2018 | 71,242 |
| 2019 | 65,586 |
| 2020 | 41,976 |
| 2021 | 46,077 |
| 2022 | 59,797 |
| 2023 | 60,766 |
| 2024 | 61,444 |
| 2025 | 61,671 |
Source:DfT,UK Motoring analysis 2009 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, 0 of the 3 count points were counted; DfT estimated the rest from earlier counts and local trends.
A329(M) collisions
Police recorded 40 collisions with the A329(M) as the first road from 2021 to 2025, 10 of them fatal or serious. That is 7.6 per 100 million vehicle miles, higher than the 4.9 for all motorways in Great Britain. On average there were 1.6 a year for each mile of road.
Reported collisions by year
About the same in 2025 as in 2021.
| Year | Collisions |
|---|---|
| 2021 | 7 |
| 2022 | 17 |
| 2023 | 6 |
| 2024 | 3 |
| 2025 | 7 |
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 |
|---|---|
| M4 to A3290 Wokingham · 17 collisions | 9.8 |
| A329 to M4(J10) Wokingham · 20 collisions | 5.8 |
Source:DfT STATS19,UK Motoring analysis 2021 to 2025 Updated
Fatal or serious uses DfT’s adjusted serious figures. 100.0% of the collisions could be placed on a section. How we count collisions
Council areas on the A329(M)
In route order. Each is the highway authority DfT files the count points under.
- Wokingham
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 | 2009 to 2025 | 3 count points in 2025 | 15 September 2026 |
| Reported collisions | Road safety open data (STATS19) Department for Transport Derived statistics UK Motoring | 2021 to 2025 | 40 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.