A-road
A3044 traffic and collisions
The A3044 is an A-road of 4.8 miles, from Hillingdon to Surrey. This page covers its traffic at 5 DfT count points since 2000 and the collisions police recorded on it.
- Traffic in 2025 28m vehicle miles
- Average daily traffic 15,805 vehicles a day, both directions
- Busiest section 23,330 A4 to Spout Lane North
- HGV share 5.3% of vehicle miles
- Traffic since 2019 −10.3% same count points
- Collisions, 2021 to 2025 59 45.6 per 100m vehicle miles
How busy is the A3044?
On an average day in 2025, 15,805 vehicles passed each point on the A3044, counting both directions. The busiest section is A4 to Spout Lane North (Hillingdon), with 23,330 a day; the quietest listed is A4(T) to A408, with 10,472.
Busiest sections, 2025
A4 to Spout Lane North carries 1.5 times the road’s average flow.
| Section | Vehicles a day |
|---|---|
| A4 to Spout Lane North Hillingdon · 1.2 mi · HGVs 7.2% | 23,330 |
| A3113 Surrey · 1.8 mi · HGVs 4.1% | 13,751 |
| A4(T) to A408 Hillingdon · 1.4 mi · HGVs 3.0% | 10,472 |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
Route
Hillingdon to Surrey · 4.8 miles
A3044 traffic and collisions by section
5 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 | A4(T) to A408Hillingdon | 10,472 | 17 |
| 2 | Spout Lane North to A4Hillingdon | 23,330 | fewer than 3 |
| 3 | A4 to Spout Lane NorthHillingdon | 23,330 | 12 |
| 4 | Spout Lane North to A3113Hillingdon | 14,576 | 4 |
| 5 | A3113Surrey | 13,751 | 24 |
Vehicles a day is the average daily flow in 2025. “Since 2019” compares the same count points. Collisions are those with the A3044 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.
A3044 traffic by vehicle type
Cars and taxis make up 74.8% of the vehicle miles on the A3044. HGVs account for 5.3%, rising to 7.2% on A4 to Spout Lane North.
Vehicle mix, 2025
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
HGV share of traffic
| Year | HGV share |
|---|---|
| 2000 | 3.2% |
| 2001 | 4.7% |
| 2002 | 5.3% |
| 2003 | 3.9% |
| 2004 | 4.5% |
| 2005 | 4.8% |
| 2006 | 5.6% |
| 2007 | 5.9% |
| 2008 | 4.1% |
| 2009 | 3.8% |
| 2010 | 4.4% |
| 2011 | 4.6% |
| 2012 | 4.0% |
| 2013 | 4.2% |
| 2014 | 3.6% |
| 2015 | 3.6% |
| 2016 | 3.8% |
| 2017 | 5.3% |
| 2018 | 5.8% |
| 2019 | 6.1% |
| 2020 | 8.4% |
| 2021 | 8.2% |
| 2022 | 7.8% |
| 2023 | 7.4% |
| 2024 | 5.5% |
| 2025 | 5.3% |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
A3044 traffic trend
Traffic on the A3044 came to 27.7 million vehicle miles in 2025. At the count points present in both years, it is down 10.3% on 2019, before the pandemic, and down 17.5% on 2015.
Vehicle miles a year
Like for like, traffic is down 27.9% on 2000.
| Year | Vehicle miles |
|---|---|
| 2000 | 38m |
| 2001 | 40m |
| 2002 | 40m |
| 2003 | 39m |
| 2004 | 40m |
| 2005 | 40m |
| 2006 | 41m |
| 2007 | 38m |
| 2008 | 40m |
| 2009 | 40m |
| 2010 | 39m |
| 2011 | 39m |
| 2012 | 32m |
| 2013 | 32m |
| 2014 | 34m |
| 2015 | 33m |
| 2016 | 33m |
| 2017 | 34m |
| 2018 | 36m |
| 2019 | 35m |
| 2020 | 21m |
| 2021 | 24m |
| 2022 | 25m |
| 2023 | 25m |
| 2024 | 28m |
| 2025 | 28m |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
Average daily flow
| Year | Vehicles a day |
|---|---|
| 2000 | 20,975 |
| 2001 | 21,744 |
| 2002 | 21,997 |
| 2003 | 21,564 |
| 2004 | 21,732 |
| 2005 | 21,699 |
| 2006 | 22,200 |
| 2007 | 21,007 |
| 2008 | 22,079 |
| 2009 | 21,855 |
| 2010 | 21,541 |
| 2011 | 21,516 |
| 2012 | 17,638 |
| 2013 | 17,714 |
| 2014 | 18,516 |
| 2015 | 18,119 |
| 2016 | 18,271 |
| 2017 | 18,625 |
| 2018 | 19,269 |
| 2019 | 18,531 |
| 2020 | 11,961 |
| 2021 | 13,334 |
| 2022 | 13,780 |
| 2023 | 13,986 |
| 2024 | 15,696 |
| 2025 | 15,805 |
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 (31.3% of today’s road for 2019). In 2025, 1 of the 5 count points were counted; DfT estimated the rest from earlier counts and local trends.
A3044 collisions
Police recorded 59 collisions with the A3044 as the first road from 2021 to 2025, 17 of them fatal or serious. That is 45.6 per 100 million vehicle miles, higher than the 31.5 for all A-roads in Great Britain. On average there were 2.5 a year for each mile of road.
Reported collisions by year
Up 177.8% from 2021 to 2025.
| Year | Collisions |
|---|---|
| 2021 | 9 |
| 2022 | 6 |
| 2023 | 7 |
| 2024 | 12 |
| 2025 | 25 |
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 |
|---|---|
| A4 to Spout Lane North Hillingdon · 12 collisions | 117.4 |
| A4(T) to A408 Hillingdon · 17 collisions | 68.6 |
| A3113 Surrey · 24 collisions | 53.8 |
Source:DfT STATS19,UK Motoring analysis 2021 to 2025 Updated
A further 18 collisions were recorded at junctions where the A3044 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 A3044
In route order. Each is the highway authority DfT files the count points under.
- Hillingdon
- Surrey
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 | 5 count points in 2025 | 15 September 2026 |
| Reported collisions | Road safety open data (STATS19) Department for Transport Derived statistics UK Motoring | 2021 to 2025 | 59 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.