A-road
A329 traffic and collisions
The A329 is an A-road of 49.6 miles, from Surrey to Oxfordshire. This page covers its traffic at 48 DfT count points since 2000 and the collisions police recorded on it.
- Traffic in 2025 239m vehicle miles
- Average daily traffic 13,181 vehicles a day, both directions
- Busiest section 41,050 A3095 to Doncastle Rd
- HGV share 2.2% of vehicle miles
- Traffic since 2019 −4.0% same count points
- Collisions, 2021 to 2025 592 51.5 per 100m vehicle miles
How busy is the A329?
On an average day in 2025, 13,181 vehicles passed each point on the A329, counting both directions. The busiest section is A3095 to Doncastle Rd (Bracknell Forest), with 41,050 a day; the quietest listed is A4074 to B480, with 3,036.
Busiest sections, 2025
A3095 to Doncastle Rd carries 3.1 times the road’s average flow.
| Section | Vehicles a day |
|---|---|
| A3095 to Doncastle Rd Bracknell Forest · 0.7 mi · HGVs 5.8% | 41,050 |
| Doncastle Rd to A329M Bracknell Forest, Wokingham · 1.1 mi · HGVs 5.5% | 38,629 |
| A3095 to B3408/B3018 roundabout Bracknell Forest · 0.7 mi · HGVs 2.0% | 21,270 |
| B3017 to A3095 Bracknell Forest · 1.9 mi · HGVs 1.3% | 19,823 |
| A332 to B3017 Windsor and Maidenhead, Bracknell Forest · 0.9 mi · HGVs 1.8% | 19,061 |
| A30095 to B3408 Bracknell Forest · 0.6 mi · HGVs 1.6% | 17,518 |
| A329 Wiltshire Rd to A329(M) Wokingham · 1.4 mi · HGVs 2.9% | 17,180 |
| Junction A321/A329 in Wokingham to Roundabout B3270/A329 Wokingham · 3.1 mi · HGVs 1.0% | 16,982 |
| A330 to A332 Windsor and Maidenhead · 0.6 mi · HGVs 2.1% | 16,639 |
| A4 to Watlington St roundabout Reading · 0.6 mi · HGVs 1.3% | 15,883 |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
Route
Surrey to Oxfordshire · 49.6 miles
A329 traffic and collisions by section
35 sections between junctions, in route order. Each is the average of its DfT count points, weighted by length. 8 short link roads and spurs (2.4 miles) count in the road’s totals but are not listed.
Show all 35 sections Tap a column heading to sort
| # | |||
|---|---|---|---|
| 1 | A30 to B383Surrey, Windsor and Maidenhead | 8,931 | 10 |
| 2 | B383 to B3020Windsor and Maidenhead | 12,576 | fewer than 3 |
| 3 | B3020 to A330Windsor and Maidenhead | 13,465 | 5 |
| 4 | At A330Windsor and Maidenhead | 16,071 | 5 |
| 5 | A330 to A332Windsor and Maidenhead | 16,639 | 14 |
| 6 | A332 to B3017Windsor and Maidenhead, Bracknell Forest | 19,061 | 8 |
| 7 | B3017 to A3095Bracknell Forest | 19,823 | 19 |
| 8 | A3095 to B3408/B3018 roundaboutBracknell Forest | 21,270 | 9 |
| 9 | A30095 to B3408Bracknell Forest | 17,518 | 12 |
| 10 | A3095 to Doncastle RdBracknell Forest | 41,050 | 11 |
| 11 | Doncastle Rd to A329MBracknell Forest, Wokingham | 38,629 | 12 |
| 12 | A329M to A329Wokingham | 7,726 | 0 |
| 13 | A329 Wiltshire Rd to A329(M)Wokingham | 17,180 | 17 |
| 14 | A329 London Rd to A321Wokingham | 11,621 | 0 |
| 15 | A321 to A329 Shute EndWokingham | 12,813 | 0 |
| 16 | A321 to A329 Rectory RdWokingham | 14,770 | 0 |
| 17 | Shute End to Junction A321/A329 in WokinghamWokingham | 17,874 | 7 |
| 18 | Junction A321/A329 in Wokingham to Roundabout B3270/A329Wokingham | 16,982 | 52 |
| 19 | A3290 to B3350Wokingham | 15,481 | 38 |
| 20 | B3350 to A4Reading | 10,329 | 36 |
| 21 | A4 to Watlington St roundaboutReading | 15,883 | 52 |
| 22 | Watlington St roundabout to A327Reading | 19,549 | 12 |
| 23 | Crossing between A33 and A329 to Where A329 crosses A327 London StreetReading | 12,876 | 4 |
| 24 | A33 western spur to A33 eastern spurReading | 30,382 | fewer than 3 |
| 25 | A33 to A4155WReading | 47,888 | 5 |
| 26 | A4155W to Civic centreReading | 41,988 | 7 |
| 27 | Civic centre to Prospect StReading | 15,707 | 12 |
| 28 | Prospect St to Norcot RdReading | 11,872 | 88 |
| 29 | Norcot Rd to A329/A340 Junction (in Pangbourne, West Berkshire)Reading, West Berkshire | 12,122 | 36 |
| 30 | A340 to B4009West Berkshire | 8,130 | 8 |
| 31 | B4009 to A417West Berkshire | 8,977 | 0 |
| 32 | A417 to A4130West Berkshire, Oxfordshire | 7,907 | 3 |
| 33 | A4074 to B480Oxfordshire | 3,036 | 3 |
| 34 | B480 to M40Oxfordshire | 8,692 | 12 |
| 35 | M40 to A418Oxfordshire | 10,430 | 13 |
Vehicles a day is the average daily flow in 2025. “Since 2019” compares the same count points. Collisions are those with the A329 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 traffic by vehicle type
Cars and taxis make up 82.4% of the vehicle miles on the A329. HGVs account for 2.2%, rising to 5.8% on A3095 to Doncastle Rd.
Vehicle mix, 2025
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
HGV share of traffic
| Year | HGV share |
|---|---|
| 2000 | 3.8% |
| 2001 | 3.7% |
| 2002 | 3.5% |
| 2003 | 3.5% |
| 2004 | 3.7% |
| 2005 | 3.6% |
| 2006 | 3.6% |
| 2007 | 3.2% |
| 2008 | 3.5% |
| 2009 | 3.3% |
| 2010 | 3.5% |
| 2011 | 2.6% |
| 2012 | 2.5% |
| 2013 | 2.6% |
| 2014 | 2.6% |
| 2015 | 2.6% |
| 2016 | 2.5% |
| 2017 | 2.5% |
| 2018 | 2.6% |
| 2019 | 2.5% |
| 2020 | 3.1% |
| 2021 | 3.1% |
| 2022 | 2.9% |
| 2023 | 2.8% |
| 2024 | 2.3% |
| 2025 | 2.2% |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
A329 traffic trend
Traffic on the A329 came to 239 million vehicle miles in 2025. At the count points present in both years, it is down 4.0% on 2019, before the pandemic, and down 2.2% on 2015.
Vehicle miles a year
Like for like, traffic is down 11.8% on 2000.
| Year | Vehicle miles |
|---|---|
| 2000 | 383m |
| 2001 | 386m |
| 2002 | 388m |
| 2003 | 372m |
| 2004 | 372m |
| 2005 | 368m |
| 2006 | 372m |
| 2007 | 371m |
| 2008 | 371m |
| 2009 | 372m |
| 2010 | 365m |
| 2011 | 234m |
| 2012 | 228m |
| 2013 | 224m |
| 2014 | 228m |
| 2015 | 232m |
| 2016 | 231m |
| 2017 | 233m |
| 2018 | 247m |
| 2019 | 250m |
| 2020 | 189m |
| 2021 | 208m |
| 2022 | 231m |
| 2023 | 236m |
| 2024 | 237m |
| 2025 | 239m |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
Average daily flow
| Year | Vehicles a day |
|---|---|
| 2000 | 20,025 |
| 2001 | 20,199 |
| 2002 | 20,296 |
| 2003 | 19,444 |
| 2004 | 19,441 |
| 2005 | 19,244 |
| 2006 | 19,464 |
| 2007 | 19,418 |
| 2008 | 19,380 |
| 2009 | 19,445 |
| 2010 | 19,071 |
| 2011 | 13,539 |
| 2012 | 13,167 |
| 2013 | 12,971 |
| 2014 | 13,170 |
| 2015 | 13,396 |
| 2016 | 13,319 |
| 2017 | 13,400 |
| 2018 | 13,821 |
| 2019 | 13,969 |
| 2020 | 10,564 |
| 2021 | 11,591 |
| 2022 | 12,764 |
| 2023 | 13,027 |
| 2024 | 13,099 |
| 2025 | 13,181 |
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 (87.3% of today’s road for 2019). In 2025, 4 of the 48 count points were counted; DfT estimated the rest from earlier counts and local trends.
A329 collisions
Police recorded 592 collisions with the A329 as the first road from 2021 to 2025, 129 of them fatal or serious, including 8 fatal. That is 51.5 per 100 million vehicle miles, higher than the 31.5 for all A-roads in Great Britain. On average there were 2.4 a year for each mile of road.
Reported collisions by year
Up 3.6% from 2021 to 2025.
| Year | Slight | Fatal or serious |
|---|---|---|
| 2021 | 92 | 20 |
| 2022 | 91 | 33 |
| 2023 | 100 | 29 |
| 2024 | 94 | 17 |
| 2025 | 86 | 30 |
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 |
|---|---|
| Prospect St to Norcot Rd Reading · 88 collisions | 300.0 |
| A4 to Watlington St roundabout Reading · 52 collisions | 294.4 |
| B3350 to A4 Reading · 36 collisions | 165.3 |
| A3290 to B3350 Wokingham · 38 collisions | 92.0 |
| Civic centre to Prospect St Reading · 12 collisions | 81.4 |
| A330 to A332 Windsor and Maidenhead · 14 collisions | 79.3 |
| Junction A321/A329 in Wokingham to Roundabout B3270/A329 Wokingham · 52 collisions | 64.8 |
| A30095 to B3408 Bracknell Forest · 12 collisions | 64.5 |
Source:DfT STATS19,UK Motoring analysis 2021 to 2025 Updated
A further 36 collisions were recorded at junctions where the A329 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 A329
In route order. Each is the highway authority DfT files the count points under.
- Surrey
- Windsor and Maidenhead
- Bracknell Forest
- Wokingham
- Reading
- West Berkshire
- 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 | 48 count points in 2025 | 15 September 2026 |
| Reported collisions | Road safety open data (STATS19) Department for Transport Derived statistics UK Motoring | 2021 to 2025 | 592 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.