A-road
A415 traffic and collisions
The A415 is an A-road of 21.0 miles, in Oxfordshire. This page covers its traffic at 10 DfT count points since 2000 and the collisions police recorded on it.
- Traffic in 2025 85m vehicle miles
- Average daily traffic 11,061 vehicles a day, both directions
- Busiest section 27,690 A415 Stratton Way to A34(T)
- HGV share 2.4% of vehicle miles
- Traffic since 2019 −3.9% same count points
- Collisions, 2021 to 2025 95 23.2 per 100m vehicle miles
How busy is the A415?
On an average day in 2025, 11,061 vehicles passed each point on the A415, counting both directions. The busiest section is A415 Stratton Way to A34(T) (Oxfordshire), with 27,690 a day; the quietest listed is B4015 to A4074, with 6,541.
Busiest sections, 2025
A415 Stratton Way to A34(T) carries 2.5 times the road’s average flow.
| Section | Vehicles a day |
|---|---|
| A415 Stratton Way to A34(T) Oxfordshire · 1.2 mi · HGVs 2.1% | 27,690 |
| A34 to A338 Oxfordshire · 2.4 mi · HGVs 3.2% | 13,571 |
| A40 to A4095 Oxfordshire · 0.8 mi · HGVs 1.1% | 10,840 |
| A338 to A420 Kingston Bagpuize Oxfordshire · 2.6 mi · HGVs 4.1% | 10,172 |
| A420 to A40 Oxfordshire · 7.9 mi · HGVs 1.3% | 9,839 |
| Abingdon Stert St to B 4015 Clifton Hampden Oxfordshire · 3.9 mi · HGVs 3.3% | 9,300 |
| B4015 to A4074 Oxfordshire · 1.6 mi · HGVs 3.1% | 6,541 |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
Route
In Oxfordshire · 21.0 miles
A415 traffic and collisions by section
8 sections between junctions, in route order. Each is the average of its DfT count points, weighted by length. 2 short link roads and spurs (0.4 miles) count in the road’s totals but are not listed.
Sections Tap a column heading to sort
| # | |||
|---|---|---|---|
| 1 | B4015 to A4074Oxfordshire | 6,541 | fewer than 3 |
| 2 | Abingdon Stert St to B 4015 Clifton HampdenOxfordshire | 9,300 | 13 |
| 3 | A415 Stert St to A415 Stratton WayOxfordshire | 9,757 | 4 |
| 4 | A415 Stratton Way to A34(T)Oxfordshire | 27,690 | 21 |
| 5 | A34 to A338Oxfordshire | 13,571 | 15 |
| 6 | A338 to A420 Kingston BagpuizeOxfordshire | 10,172 | 10 |
| 7 | A420 to A40Oxfordshire | 9,839 | 13 |
| 8 | A40 to A4095Oxfordshire | 10,840 | 11 |
Vehicles a day is the average daily flow in 2025. “Since 2019” compares the same count points. Collisions are those with the A415 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.
A415 traffic by vehicle type
Cars and taxis make up 78.8% of the vehicle miles on the A415. HGVs account for 2.4%, rising to 4.1% on A338 to A420 Kingston Bagpuize.
Vehicle mix, 2025
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
HGV share of traffic
| Year | HGV share |
|---|---|
| 2000 | 4.4% |
| 2001 | 4.6% |
| 2002 | 4.8% |
| 2003 | 4.5% |
| 2004 | 4.0% |
| 2005 | 4.0% |
| 2006 | 3.9% |
| 2007 | 3.3% |
| 2008 | 3.2% |
| 2009 | 2.9% |
| 2010 | 2.9% |
| 2011 | 3.0% |
| 2012 | 2.5% |
| 2013 | 2.5% |
| 2014 | 2.5% |
| 2015 | 2.5% |
| 2016 | 2.6% |
| 2017 | 2.6% |
| 2018 | 2.6% |
| 2019 | 2.6% |
| 2020 | 3.0% |
| 2021 | 3.0% |
| 2022 | 2.9% |
| 2023 | 2.7% |
| 2024 | 2.6% |
| 2025 | 2.4% |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
A415 traffic trend
Traffic on the A415 came to 84.8 million vehicle miles in 2025. At the count points present in both years, it is down 3.9% on 2019, before the pandemic, and down 2.4% on 2015.
Vehicle miles a year
Like for like, traffic is down 3.8% on 2000.
| Year | Vehicle miles |
|---|---|
| 2000 | 86m |
| 2001 | 88m |
| 2002 | 90m |
| 2003 | 89m |
| 2004 | 89m |
| 2005 | 91m |
| 2006 | 87m |
| 2007 | 87m |
| 2008 | 86m |
| 2009 | 85m |
| 2010 | 83m |
| 2011 | 84m |
| 2012 | 83m |
| 2013 | 83m |
| 2014 | 85m |
| 2015 | 85m |
| 2016 | 88m |
| 2017 | 88m |
| 2018 | 88m |
| 2019 | 88m |
| 2020 | 67m |
| 2021 | 76m |
| 2022 | 82m |
| 2023 | 83m |
| 2024 | 84m |
| 2025 | 85m |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
Average daily flow
| Year | Vehicles a day |
|---|---|
| 2000 | 11,441 |
| 2001 | 11,612 |
| 2002 | 11,861 |
| 2003 | 11,795 |
| 2004 | 11,800 |
| 2005 | 12,008 |
| 2006 | 11,538 |
| 2007 | 11,554 |
| 2008 | 11,401 |
| 2009 | 11,207 |
| 2010 | 11,031 |
| 2011 | 11,090 |
| 2012 | 10,971 |
| 2013 | 10,997 |
| 2014 | 11,247 |
| 2015 | 11,271 |
| 2016 | 11,587 |
| 2017 | 11,647 |
| 2018 | 11,477 |
| 2019 | 11,506 |
| 2020 | 8,723 |
| 2021 | 9,874 |
| 2022 | 10,637 |
| 2023 | 10,855 |
| 2024 | 10,991 |
| 2025 | 11,061 |
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, 1 of the 10 count points were counted; DfT estimated the rest from earlier counts and local trends.
A415 collisions
Police recorded 95 collisions with the A415 as the first road from 2021 to 2025, 32 of them fatal or serious, including 3 fatal. That is 23.2 per 100 million vehicle miles, lower than the 31.5 for all A-roads in Great Britain. On average there were 0.9 a year for each mile of road.
Reported collisions by year
Down 28.6% from 2021 to 2025.
| Year | Slight | Fatal or serious |
|---|---|---|
| 2021 | 15 | 6 |
| 2022 | 13 | 10 |
| 2023 | 14 | 8 |
| 2024 | 10 | 4 |
| 2025 | 11 | 4 |
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 |
|---|---|
| A40 to A4095 Oxfordshire · 11 collisions | 67.4 |
| A415 Stratton Way to A34(T) Oxfordshire · 21 collisions | 34.9 |
| A34 to A338 Oxfordshire · 15 collisions | 26.3 |
| A338 to A420 Kingston Bagpuize Oxfordshire · 10 collisions | 21.6 |
| Abingdon Stert St to B 4015 Clifton Hampden Oxfordshire · 13 collisions | 20.4 |
| A420 to A40 Oxfordshire · 13 collisions | 9.6 |
Source:DfT STATS19,UK Motoring analysis 2021 to 2025 Updated
A further 20 collisions were recorded at junctions where the A415 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 A415
In route order. Each is the highway authority DfT files the count points under.
- 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 | 10 count points in 2025 | 15 September 2026 |
| Reported collisions | Road safety open data (STATS19) Department for Transport Derived statistics UK Motoring | 2021 to 2025 | 95 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.