A-road
A429 traffic and collisions
The A429 is an A-road of 70.0 miles, from Coventry to Wiltshire. This page covers its traffic at 35 DfT count points since 2000 and the collisions police recorded on it.
- Traffic in 2025 286m vehicle miles
- Average daily traffic 11,176 vehicles a day, both directions
- Busiest section 23,824 A435 to A419
- HGV share 4.5% of vehicle miles
- Traffic since 2019 −4.4% same count points
- Collisions, 2021 to 2025 337 25.0 per 100m vehicle miles
How busy is the A429?
On an average day in 2025, 11,176 vehicles passed each point on the A429, counting both directions. The busiest section is A435 to A419 (Gloucestershire), with 23,824 a day; the quietest listed is Gibbet Hill Rd to Woodland Rd, Kenilworth, with 5,836.
Busiest sections, 2025
A435 to A419 carries 2.1 times the road’s average flow.
| Section | Vehicles a day |
|---|---|
| A435 to A419 Gloucestershire · 0.7 mi · HGVs 2.1% | 23,824 |
| B4113 to A4053 Coventry · 0.5 mi · HGVs 1.0% | 20,184 |
| A430 to A424 Gloucestershire · 0.8 mi · HGVs 3.5% | 20,105 |
| B4107 Earlsdon Ave to A45 Coventry · 0.7 mi · HGVs 1.1% | 18,675 |
| A46 to Primrose Hill Warwickshire · 1.3 mi · HGVs 1.4% | 18,239 |
| A419 to A433 Gloucestershire · 1.0 mi · HGVs 2.9% | 15,549 |
| M40 to A422 Warwickshire · 9.1 mi · HGVs 6.6% | 15,482 |
| M4 Junction 17 to B4042 Wiltshire · 5.2 mi · HGVs 4.2% | 15,251 |
| Primrose Hill to A445 Warwickshire · 0.7 mi · HGVs 0.7% | 15,054 |
| A424 to A436 Gloucestershire · 2.9 mi · HGVs 5.3% | 14,684 |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
Route
Coventry to Wiltshire · 70.0 miles
A429 traffic and collisions by section
31 sections between junctions, in route order. Each is the average of its DfT count points, weighted by length. 1 short link roads and spurs (0.2 miles) count in the road’s totals but are not listed.
Show all 31 sections Tap a column heading to sort
| # | |||
|---|---|---|---|
| 1 | B4113 to A4053Coventry | 20,184 | 8 |
| 2 | B4113 Leamington Rd to B4107 Earlsdon AveCoventry | 14,643 | 6 |
| 3 | B4107 Earlsdon Ave to A45Coventry | 18,675 | fewer than 3 |
| 4 | A45 to Gibbet Hill RdCoventry | 10,589 | 10 |
| 5 | Gibbet Hill Rd to Woodland Rd, KenilworthCoventry, Warwickshire | 5,836 | fewer than 3 |
| 6 | A452 to Woodland RdWarwickshire | 9,286 | 4 |
| 7 | A46 to Primrose HillWarwickshire | 18,239 | 9 |
| 8 | Primrose Hill to A445Warwickshire | 15,054 | 13 |
| 9 | At A445Warwickshire | 19,299 | 0 |
| 10 | A445 to A425Warwickshire | 7,153 | fewer than 3 |
| 11 | A425 to A4189Warwickshire | 11,356 | 3 |
| 12 | A4189 to Alders GroveWarwickshire | 11,315 | 7 |
| 13 | Alders Grove to M40Warwickshire | 8,601 | 8 |
| 14 | M40 to A422Warwickshire | 15,482 | 37 |
| 15 | A422 to B4455Warwickshire | 7,797 | 4 |
| 16 | B4455 to A3400Warwickshire | 11,215 | 4 |
| 17 | A3400 to A44 Oxford StWarwickshire, Gloucestershire | 9,206 | 29 |
| 18 | A44 Oxford St to A44 Bourton RdGloucestershire | 17,685 | fewer than 3 |
| 19 | A424 to A44Gloucestershire | 11,072 | 20 |
| 20 | B4450 to B4077Gloucestershire | 16,232 | fewer than 3 |
| 21 | A430 to A424Gloucestershire | 20,105 | 6 |
| 22 | A424 to A436Gloucestershire | 14,684 | 15 |
| 23 | A436 to A40(T)Gloucestershire | 7,817 | 11 |
| 24 | A417 to A40Gloucestershire | 7,736 | 38 |
| 25 | A417 London Road to A417 (T)Gloucestershire | 14,373 | 3 |
| 26 | A429 Swindon Road roundabout to A417 London RdGloucestershire | 22,796 | fewer than 3 |
| 27 | A435 to A419Gloucestershire | 23,824 | 12 |
| 28 | A419 to A433Gloucestershire | 15,549 | 19 |
| 29 | A433 to B4040Gloucestershire, Wiltshire | 7,071 | 22 |
| 30 | B4014/B4042 roundabout to B4040 roundaboutWiltshire | 12,865 | 4 |
| 31 | M4 Junction 17 to B4042Wiltshire | 15,251 | 19 |
Vehicles a day is the average daily flow in 2025. “Since 2019” compares the same count points. Collisions are those with the A429 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.
A429 traffic by vehicle type
Cars and taxis make up 79.0% of the vehicle miles on the A429. HGVs account for 4.5%, rising to 6.6% on M40 to A422.
Vehicle mix, 2025
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
HGV share of traffic
| Year | HGV share |
|---|---|
| 2000 | 5.7% |
| 2001 | 5.3% |
| 2002 | 5.5% |
| 2003 | 5.4% |
| 2004 | 5.6% |
| 2005 | 5.5% |
| 2006 | 5.4% |
| 2007 | 5.5% |
| 2008 | 5.4% |
| 2009 | 4.9% |
| 2010 | 5.0% |
| 2011 | 4.8% |
| 2012 | 4.8% |
| 2013 | 4.8% |
| 2014 | 4.8% |
| 2015 | 4.9% |
| 2016 | 4.9% |
| 2017 | 5.0% |
| 2018 | 5.0% |
| 2019 | 5.0% |
| 2020 | 5.9% |
| 2021 | 5.6% |
| 2022 | 5.3% |
| 2023 | 5.0% |
| 2024 | 4.6% |
| 2025 | 4.5% |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
A429 traffic trend
Traffic on the A429 came to 286 million vehicle miles in 2025. At the count points present in both years, it is down 4.4% on 2019, before the pandemic, and up 10.8% on 2015.
Vehicle miles a year
Like for like, traffic is up 14.2% on 2000.
| Year | Vehicle miles |
|---|---|
| 2000 | 247m |
| 2001 | 254m |
| 2002 | 260m |
| 2003 | 254m |
| 2004 | 253m |
| 2005 | 254m |
| 2006 | 255m |
| 2007 | 260m |
| 2008 | 247m |
| 2009 | 246m |
| 2010 | 243m |
| 2011 | 246m |
| 2012 | 247m |
| 2013 | 248m |
| 2014 | 253m |
| 2015 | 256m |
| 2016 | 265m |
| 2017 | 282m |
| 2018 | 296m |
| 2019 | 297m |
| 2020 | 225m |
| 2021 | 245m |
| 2022 | 264m |
| 2023 | 273m |
| 2024 | 280m |
| 2025 | 286m |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
Average daily flow
| Year | Vehicles a day |
|---|---|
| 2000 | 9,742 |
| 2001 | 10,011 |
| 2002 | 10,274 |
| 2003 | 10,023 |
| 2004 | 10,000 |
| 2005 | 10,008 |
| 2006 | 10,043 |
| 2007 | 10,267 |
| 2008 | 9,732 |
| 2009 | 9,695 |
| 2010 | 9,594 |
| 2011 | 9,701 |
| 2012 | 9,746 |
| 2013 | 9,775 |
| 2014 | 9,961 |
| 2015 | 10,078 |
| 2016 | 10,443 |
| 2017 | 11,109 |
| 2018 | 11,652 |
| 2019 | 11,683 |
| 2020 | 8,853 |
| 2021 | 9,617 |
| 2022 | 10,373 |
| 2023 | 10,736 |
| 2024 | 10,999 |
| 2025 | 11,176 |
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 35 count points were counted; DfT estimated the rest from earlier counts and local trends.
A429 collisions
Police recorded 337 collisions with the A429 as the first road from 2021 to 2025, 109 of them fatal or serious. That is 25.0 per 100 million vehicle miles, lower than the 31.5 for all A-roads in Great Britain. On average there were 1.0 a year for each mile of road.
Reported collisions by year
Up 17.5% from 2021 to 2025.
| Year | Slight | Fatal or serious |
|---|---|---|
| 2021 | 36 | 27 |
| 2022 | 40 | 23 |
| 2023 | 57 | 26 |
| 2024 | 43 | 11 |
| 2025 | 52 | 22 |
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 |
|---|---|
| Primrose Hill to A445 Warwickshire · 13 collisions | 75.8 |
| A419 to A433 Gloucestershire · 19 collisions | 71.5 |
| A45 to Gibbet Hill Rd Coventry · 10 collisions | 44.9 |
| A435 to A419 Gloucestershire · 12 collisions | 40.1 |
| A417 to A40 Gloucestershire · 38 collisions | 29.8 |
| A424 to A44 Gloucestershire · 20 collisions | 24.2 |
| A3400 to A44 Oxford St Warwickshire, Gloucestershire · 29 collisions | 23.4 |
| A424 to A436 Gloucestershire · 15 collisions | 22.1 |
Source:DfT STATS19,UK Motoring analysis 2021 to 2025 Updated
A further 40 collisions were recorded at junctions where the A429 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 A429
In route order. Each is the highway authority DfT files the count points under.
- Coventry
- Warwickshire
- Gloucestershire
- Wiltshire
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 | 35 count points in 2025 | 15 September 2026 |
| Reported collisions | Road safety open data (STATS19) Department for Transport Derived statistics UK Motoring | 2021 to 2025 | 337 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.